diff --git a/src/app/(dashboard)/[portSlug]/reminders/page.tsx b/src/app/(dashboard)/[portSlug]/reminders/page.tsx
index b501217..ad93699 100644
--- a/src/app/(dashboard)/[portSlug]/reminders/page.tsx
+++ b/src/app/(dashboard)/[portSlug]/reminders/page.tsx
@@ -1,16 +1,5 @@
+import { ReminderList } from '@/components/reminders/reminder-list';
+
 export default function RemindersPage() {
-  return (
-    <div className="space-y-6">
-      <div>
-        <h1 className="text-2xl font-bold text-foreground">Reminders</h1>
-        <p className="text-muted-foreground">Manage tasks and follow-up reminders</p>
-      </div>
-      <div className="flex flex-col items-center justify-center rounded-lg border border-dashed p-12">
-        <p className="text-lg font-medium text-muted-foreground">Coming in Layer 2</p>
-        <p className="text-sm text-muted-foreground">
-          This feature will be implemented in the next phase.
-        </p>
-      </div>
-    </div>
-  );
+  return <ReminderList />;
 }
diff --git a/src/app/api/v1/reminders/[id]/complete/route.ts b/src/app/api/v1/reminders/[id]/complete/route.ts
new file mode 100644
index 0000000..077eaa3
--- /dev/null
+++ b/src/app/api/v1/reminders/[id]/complete/route.ts
@@ -0,0 +1,21 @@
+import { NextResponse } from 'next/server';
+
+import { withAuth, withPermission } from '@/lib/api/helpers';
+import { completeReminder } from '@/lib/services/reminders.service';
+import { errorResponse } from '@/lib/errors';
+
+export const POST = withAuth(
+  withPermission('reminders', 'edit_own', async (_req, ctx, params) => {
+    try {
+      const data = await completeReminder(params.id!, ctx.portId, {
+        userId: ctx.userId,
+        portId: ctx.portId,
+        ipAddress: ctx.ipAddress,
+        userAgent: ctx.userAgent,
+      });
+      return NextResponse.json({ data });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
diff --git a/src/app/api/v1/reminders/[id]/dismiss/route.ts b/src/app/api/v1/reminders/[id]/dismiss/route.ts
new file mode 100644
index 0000000..48ef647
--- /dev/null
+++ b/src/app/api/v1/reminders/[id]/dismiss/route.ts
@@ -0,0 +1,21 @@
+import { NextResponse } from 'next/server';
+
+import { withAuth, withPermission } from '@/lib/api/helpers';
+import { dismissReminder } from '@/lib/services/reminders.service';
+import { errorResponse } from '@/lib/errors';
+
+export const POST = withAuth(
+  withPermission('reminders', 'edit_own', async (_req, ctx, params) => {
+    try {
+      const data = await dismissReminder(params.id!, ctx.portId, {
+        userId: ctx.userId,
+        portId: ctx.portId,
+        ipAddress: ctx.ipAddress,
+        userAgent: ctx.userAgent,
+      });
+      return NextResponse.json({ data });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
diff --git a/src/app/api/v1/reminders/[id]/route.ts b/src/app/api/v1/reminders/[id]/route.ts
new file mode 100644
index 0000000..81cd346
--- /dev/null
+++ b/src/app/api/v1/reminders/[id]/route.ts
@@ -0,0 +1,51 @@
+import { NextResponse } from 'next/server';
+
+import { withAuth, withPermission } from '@/lib/api/helpers';
+import { parseBody } from '@/lib/api/route-helpers';
+import { getReminder, updateReminder, deleteReminder } from '@/lib/services/reminders.service';
+import { updateReminderSchema } from '@/lib/validators/reminders';
+import { errorResponse } from '@/lib/errors';
+
+export const GET = withAuth(
+  withPermission('reminders', 'view_own', async (_req, ctx, params) => {
+    try {
+      const data = await getReminder(params.id!, ctx.portId);
+      return NextResponse.json({ data });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
+
+export const PATCH = withAuth(
+  withPermission('reminders', 'edit_own', async (req, ctx, params) => {
+    try {
+      const body = await parseBody(req, updateReminderSchema);
+      const data = await updateReminder(params.id!, ctx.portId, body, {
+        userId: ctx.userId,
+        portId: ctx.portId,
+        ipAddress: ctx.ipAddress,
+        userAgent: ctx.userAgent,
+      });
+      return NextResponse.json({ data });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
+
+export const DELETE = withAuth(
+  withPermission('reminders', 'edit_own', async (_req, ctx, params) => {
+    try {
+      await deleteReminder(params.id!, ctx.portId, {
+        userId: ctx.userId,
+        portId: ctx.portId,
+        ipAddress: ctx.ipAddress,
+        userAgent: ctx.userAgent,
+      });
+      return NextResponse.json({ success: true });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
diff --git a/src/app/api/v1/reminders/[id]/snooze/route.ts b/src/app/api/v1/reminders/[id]/snooze/route.ts
new file mode 100644
index 0000000..2dc7cd6
--- /dev/null
+++ b/src/app/api/v1/reminders/[id]/snooze/route.ts
@@ -0,0 +1,24 @@
+import { NextResponse } from 'next/server';
+
+import { withAuth, withPermission } from '@/lib/api/helpers';
+import { parseBody } from '@/lib/api/route-helpers';
+import { snoozeReminder } from '@/lib/services/reminders.service';
+import { snoozeReminderSchema } from '@/lib/validators/reminders';
+import { errorResponse } from '@/lib/errors';
+
+export const POST = withAuth(
+  withPermission('reminders', 'edit_own', async (req, ctx, params) => {
+    try {
+      const body = await parseBody(req, snoozeReminderSchema);
+      const data = await snoozeReminder(params.id!, ctx.portId, body, {
+        userId: ctx.userId,
+        portId: ctx.portId,
+        ipAddress: ctx.ipAddress,
+        userAgent: ctx.userAgent,
+      });
+      return NextResponse.json({ data });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
diff --git a/src/app/api/v1/reminders/my/route.ts b/src/app/api/v1/reminders/my/route.ts
new file mode 100644
index 0000000..8f01074
--- /dev/null
+++ b/src/app/api/v1/reminders/my/route.ts
@@ -0,0 +1,16 @@
+import { NextResponse } from 'next/server';
+
+import { withAuth, withPermission } from '@/lib/api/helpers';
+import { getMyReminders } from '@/lib/services/reminders.service';
+import { errorResponse } from '@/lib/errors';
+
+export const GET = withAuth(
+  withPermission('reminders', 'view_own', async (_req, ctx) => {
+    try {
+      const data = await getMyReminders(ctx.userId, ctx.portId);
+      return NextResponse.json({ data });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
diff --git a/src/app/api/v1/reminders/overdue/route.ts b/src/app/api/v1/reminders/overdue/route.ts
new file mode 100644
index 0000000..ad85728
--- /dev/null
+++ b/src/app/api/v1/reminders/overdue/route.ts
@@ -0,0 +1,16 @@
+import { NextResponse } from 'next/server';
+
+import { withAuth, withPermission } from '@/lib/api/helpers';
+import { getOverdueReminders } from '@/lib/services/reminders.service';
+import { errorResponse } from '@/lib/errors';
+
+export const GET = withAuth(
+  withPermission('reminders', 'view_all', async (_req, ctx) => {
+    try {
+      const data = await getOverdueReminders(ctx.portId);
+      return NextResponse.json({ data });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
diff --git a/src/app/api/v1/reminders/route.ts b/src/app/api/v1/reminders/route.ts
new file mode 100644
index 0000000..ae2abf2
--- /dev/null
+++ b/src/app/api/v1/reminders/route.ts
@@ -0,0 +1,50 @@
+import { NextResponse } from 'next/server';
+
+import { withAuth, withPermission } from '@/lib/api/helpers';
+import { parseBody, parseQuery } from '@/lib/api/route-helpers';
+import { listReminders, createReminder } from '@/lib/services/reminders.service';
+import { reminderListQuerySchema, createReminderSchema } from '@/lib/validators/reminders';
+import { errorResponse } from '@/lib/errors';
+
+export const GET = withAuth(
+  withPermission('reminders', 'view_own', async (req, ctx) => {
+    try {
+      const query = parseQuery(req, reminderListQuerySchema);
+      const result = await listReminders(ctx.portId, query);
+      return NextResponse.json(result);
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
+
+export const POST = withAuth(
+  withPermission('reminders', 'create', async (req, ctx) => {
+    try {
+      const body = await parseBody(req, createReminderSchema);
+
+      // Check assign_others permission if assigning to someone else
+      if (body.assignedTo && body.assignedTo !== ctx.userId) {
+        if (!ctx.isSuperAdmin) {
+          const perms = ctx.permissions?.reminders;
+          if (!perms?.assign_others) {
+            return NextResponse.json(
+              { error: 'Cannot assign reminders to other users' },
+              { status: 403 },
+            );
+          }
+        }
+      }
+
+      const data = await createReminder(ctx.portId, body, {
+        userId: ctx.userId,
+        portId: ctx.portId,
+        ipAddress: ctx.ipAddress,
+        userAgent: ctx.userAgent,
+      });
+      return NextResponse.json({ data }, { status: 201 });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
diff --git a/src/app/api/v1/reminders/upcoming/route.ts b/src/app/api/v1/reminders/upcoming/route.ts
new file mode 100644
index 0000000..f7dffbe
--- /dev/null
+++ b/src/app/api/v1/reminders/upcoming/route.ts
@@ -0,0 +1,16 @@
+import { NextResponse } from 'next/server';
+
+import { withAuth, withPermission } from '@/lib/api/helpers';
+import { getUpcomingReminders } from '@/lib/services/reminders.service';
+import { errorResponse } from '@/lib/errors';
+
+export const GET = withAuth(
+  withPermission('reminders', 'view_own', async (_req, ctx) => {
+    try {
+      const data = await getUpcomingReminders(ctx.portId);
+      return NextResponse.json({ data });
+    } catch (error) {
+      return errorResponse(error);
+    }
+  }),
+);
diff --git a/src/components/reminders/reminder-form.tsx b/src/components/reminders/reminder-form.tsx
new file mode 100644
index 0000000..1546faa
--- /dev/null
+++ b/src/components/reminders/reminder-form.tsx
@@ -0,0 +1,267 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import { Textarea } from '@/components/ui/textarea';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select';
+import { Sheet, SheetContent, SheetHeader, SheetTitle, SheetFooter } from '@/components/ui/sheet';
+import { apiFetch } from '@/lib/api/client';
+import { usePermissions } from '@/hooks/use-permissions';
+
+interface UserOption {
+  id: string;
+  displayName: string;
+}
+
+interface ReminderFormProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  reminder?: {
+    id: string;
+    title: string;
+    note: string | null;
+    dueAt: string;
+    priority: string;
+    assignedTo: string | null;
+    clientId: string | null;
+    interestId: string | null;
+    berthId: string | null;
+  } | null;
+  // Pre-fill entity link when creating from entity detail pages
+  defaultClientId?: string;
+  defaultInterestId?: string;
+  defaultBerthId?: string;
+  onSuccess: () => void;
+}
+
+export function ReminderForm({
+  open,
+  onOpenChange,
+  reminder,
+  defaultClientId,
+  defaultInterestId,
+  defaultBerthId,
+  onSuccess,
+}: ReminderFormProps) {
+  const [title, setTitle] = useState('');
+  const [note, setNote] = useState('');
+  const [dueAt, setDueAt] = useState('');
+  const [priority, setPriority] = useState('medium');
+  const [assignedTo, setAssignedTo] = useState('');
+  const [clientId, setClientId] = useState('');
+  const [interestId, setInterestId] = useState('');
+  const [berthId, setBerthId] = useState('');
+  const [users, setUsers] = useState<UserOption[]>([]);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const { can } = usePermissions();
+  const canAssignOthers = can('reminders', 'assign_others');
+
+  const isEdit = !!reminder;
+
+  useEffect(() => {
+    if (open && canAssignOthers) {
+      void apiFetch<{ data: UserOption[] }>('/api/v1/admin/users/options').then((res) =>
+        setUsers(res.data),
+      );
+    }
+  }, [open, canAssignOthers]);
+
+  useEffect(() => {
+    if (open) {
+      if (reminder) {
+        setTitle(reminder.title);
+        setNote(reminder.note ?? '');
+        setDueAt(reminder.dueAt.slice(0, 16)); // datetime-local format
+        setPriority(reminder.priority);
+        setAssignedTo(reminder.assignedTo ?? '');
+        setClientId(reminder.clientId ?? '');
+        setInterestId(reminder.interestId ?? '');
+        setBerthId(reminder.berthId ?? '');
+      } else {
+        setTitle('');
+        setNote('');
+        // Default to tomorrow 9 AM
+        const tomorrow = new Date();
+        tomorrow.setDate(tomorrow.getDate() + 1);
+        tomorrow.setHours(9, 0, 0, 0);
+        setDueAt(tomorrow.toISOString().slice(0, 16));
+        setPriority('medium');
+        setAssignedTo('');
+        setClientId(defaultClientId ?? '');
+        setInterestId(defaultInterestId ?? '');
+        setBerthId(defaultBerthId ?? '');
+      }
+      setError(null);
+    }
+  }, [open, reminder, defaultClientId, defaultInterestId, defaultBerthId]);
+
+  async function handleSubmit(e: React.FormEvent) {
+    e.preventDefault();
+    setError(null);
+    setLoading(true);
+
+    try {
+      const body = {
+        title,
+        note: note || undefined,
+        dueAt: new Date(dueAt).toISOString(),
+        priority,
+        assignedTo: assignedTo || undefined,
+        clientId: clientId || undefined,
+        interestId: interestId || undefined,
+        berthId: berthId || undefined,
+      };
+
+      if (isEdit) {
+        await apiFetch(`/api/v1/reminders/${reminder.id}`, {
+          method: 'PATCH',
+          body,
+        });
+      } else {
+        await apiFetch('/api/v1/reminders', {
+          method: 'POST',
+          body,
+        });
+      }
+      onSuccess();
+      onOpenChange(false);
+    } catch (err: unknown) {
+      const message = err instanceof Error ? err.message : 'Something went wrong';
+      setError(message);
+    } finally {
+      setLoading(false);
+    }
+  }
+
+  return (
+    <Sheet open={open} onOpenChange={onOpenChange}>
+      <SheetContent className="overflow-y-auto">
+        <SheetHeader>
+          <SheetTitle>{isEdit ? 'Edit Reminder' : 'New Reminder'}</SheetTitle>
+        </SheetHeader>
+
+        <form onSubmit={handleSubmit} className="mt-6 space-y-4">
+          <div className="space-y-2">
+            <Label htmlFor="reminder-title">Title</Label>
+            <Input
+              id="reminder-title"
+              value={title}
+              onChange={(e) => setTitle(e.target.value)}
+              placeholder="Follow up with client..."
+              required
+            />
+          </div>
+
+          <div className="space-y-2">
+            <Label htmlFor="reminder-note">Note</Label>
+            <Textarea
+              id="reminder-note"
+              value={note}
+              onChange={(e) => setNote(e.target.value)}
+              placeholder="Additional details..."
+              rows={3}
+            />
+          </div>
+
+          <div className="grid grid-cols-2 gap-4">
+            <div className="space-y-2">
+              <Label htmlFor="reminder-due">Due Date & Time</Label>
+              <Input
+                id="reminder-due"
+                type="datetime-local"
+                value={dueAt}
+                onChange={(e) => setDueAt(e.target.value)}
+                required
+              />
+            </div>
+
+            <div className="space-y-2">
+              <Label htmlFor="reminder-priority">Priority</Label>
+              <Select value={priority} onValueChange={setPriority}>
+                <SelectTrigger id="reminder-priority">
+                  <SelectValue />
+                </SelectTrigger>
+                <SelectContent>
+                  <SelectItem value="low">Low</SelectItem>
+                  <SelectItem value="medium">Medium</SelectItem>
+                  <SelectItem value="high">High</SelectItem>
+                  <SelectItem value="urgent">Urgent</SelectItem>
+                </SelectContent>
+              </Select>
+            </div>
+          </div>
+
+          {canAssignOthers && (
+            <div className="space-y-2">
+              <Label htmlFor="reminder-assign">Assign To</Label>
+              <Select value={assignedTo} onValueChange={setAssignedTo}>
+                <SelectTrigger id="reminder-assign">
+                  <SelectValue placeholder="Myself" />
+                </SelectTrigger>
+                <SelectContent>
+                  <SelectItem value="">Myself</SelectItem>
+                  {users.map((u) => (
+                    <SelectItem key={u.id} value={u.id}>
+                      {u.displayName}
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
+            </div>
+          )}
+
+          <div className="space-y-2">
+            <Label className="text-muted-foreground text-xs">
+              Link to Entity (optional — paste UUIDs, or leave blank)
+            </Label>
+            <div className="grid grid-cols-1 gap-2">
+              <Input
+                placeholder="Client ID"
+                value={clientId}
+                onChange={(e) => setClientId(e.target.value)}
+                className="text-xs"
+              />
+              <Input
+                placeholder="Interest ID"
+                value={interestId}
+                onChange={(e) => setInterestId(e.target.value)}
+                className="text-xs"
+              />
+              <Input
+                placeholder="Berth ID"
+                value={berthId}
+                onChange={(e) => setBerthId(e.target.value)}
+                className="text-xs"
+              />
+            </div>
+          </div>
+
+          {error && <p className="text-sm text-destructive">{error}</p>}
+
+          <SheetFooter>
+            <Button
+              type="button"
+              variant="outline"
+              onClick={() => onOpenChange(false)}
+              disabled={loading}
+            >
+              Cancel
+            </Button>
+            <Button type="submit" disabled={loading || !title.trim() || !dueAt}>
+              {loading ? 'Saving...' : isEdit ? 'Save Changes' : 'Create Reminder'}
+            </Button>
+          </SheetFooter>
+        </form>
+      </SheetContent>
+    </Sheet>
+  );
+}
diff --git a/src/components/reminders/reminder-list.tsx b/src/components/reminders/reminder-list.tsx
new file mode 100644
index 0000000..ab15613
--- /dev/null
+++ b/src/components/reminders/reminder-list.tsx
@@ -0,0 +1,328 @@
+'use client';
+
+import { useState, useEffect, useCallback } from 'react';
+import { type ColumnDef } from '@tanstack/react-table';
+import { Plus, CheckCircle2, Clock, XCircle, AlertTriangle, Bell } from 'lucide-react';
+import { formatDistanceToNow } from 'date-fns';
+
+import { DataTable } from '@/components/shared/data-table';
+import { PageHeader } from '@/components/shared/page-header';
+import { Button } from '@/components/ui/button';
+import { Badge } from '@/components/ui/badge';
+import { Tabs, TabsList, TabsTrigger } from '@/components/ui/tabs';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select';
+import { apiFetch } from '@/lib/api/client';
+import { usePermissions } from '@/hooks/use-permissions';
+import { ReminderForm } from './reminder-form';
+import { SnoozeDialog } from './snooze-dialog';
+
+interface Reminder {
+  id: string;
+  title: string;
+  note: string | null;
+  dueAt: string;
+  priority: 'low' | 'medium' | 'high' | 'urgent';
+  status: 'pending' | 'snoozed' | 'completed' | 'dismissed';
+  assignedTo: string | null;
+  createdBy: string;
+  clientId: string | null;
+  interestId: string | null;
+  berthId: string | null;
+  autoGenerated: boolean;
+  snoozedUntil: string | null;
+  completedAt: string | null;
+  createdAt: string;
+  client?: { id: string; fullName: string } | null;
+  interest?: { id: string; pipelineStage: string } | null;
+  berth?: { id: string; mooringNumber: string } | null;
+}
+
+const PRIORITY_CONFIG = {
+  urgent: { label: 'Urgent', className: 'bg-red-600 text-white' },
+  high: { label: 'High', className: 'bg-orange-500 text-white' },
+  medium: { label: 'Medium', className: 'bg-blue-500 text-white' },
+  low: { label: 'Low', className: 'bg-gray-400 text-white' },
+} as const;
+
+const STATUS_CONFIG = {
+  pending: { label: 'Pending', icon: Bell },
+  snoozed: { label: 'Snoozed', icon: Clock },
+  completed: { label: 'Completed', icon: CheckCircle2 },
+  dismissed: { label: 'Dismissed', icon: XCircle },
+} as const;
+
+export function ReminderList() {
+  const [reminders, setReminders] = useState<Reminder[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [formOpen, setFormOpen] = useState(false);
+  const [editingReminder, setEditingReminder] = useState<Reminder | null>(null);
+  const [snoozingId, setSnoozingId] = useState<string | null>(null);
+  const [viewMode, setViewMode] = useState<'my' | 'all'>('my');
+  const [statusFilter, setStatusFilter] = useState<string>('active');
+  const [priorityFilter, setPriorityFilter] = useState<string>('all');
+  const [total, setTotal] = useState(0);
+  const { can } = usePermissions();
+  const canViewAll = can('reminders', 'view_all');
+
+  const fetchReminders = useCallback(async () => {
+    setLoading(true);
+    try {
+      if (viewMode === 'my') {
+        const res = await apiFetch<{ data: Reminder[] }>('/api/v1/reminders/my');
+        let filtered = res.data;
+        if (priorityFilter !== 'all') {
+          filtered = filtered.filter((r) => r.priority === priorityFilter);
+        }
+        setReminders(filtered);
+        setTotal(filtered.length);
+      } else {
+        const params = new URLSearchParams({ limit: '50', order: 'asc', sort: 'dueAt' });
+        if (statusFilter === 'active') {
+          params.set('status', 'pending');
+        } else if (statusFilter !== 'all') {
+          params.set('status', statusFilter);
+        }
+        if (priorityFilter !== 'all') {
+          params.set('priority', priorityFilter);
+        }
+        const res = await apiFetch<{
+          data: Reminder[];
+          pagination: { total: number };
+        }>(`/api/v1/reminders?${params}`);
+        setReminders(res.data);
+        setTotal(res.pagination.total);
+      }
+    } finally {
+      setLoading(false);
+    }
+  }, [viewMode, statusFilter, priorityFilter]);
+
+  useEffect(() => {
+    void fetchReminders();
+  }, [fetchReminders]);
+
+  async function handleComplete(id: string) {
+    await apiFetch(`/api/v1/reminders/${id}/complete`, { method: 'POST' });
+    await fetchReminders();
+  }
+
+  async function handleDismiss(id: string) {
+    await apiFetch(`/api/v1/reminders/${id}/dismiss`, { method: 'POST' });
+    await fetchReminders();
+  }
+
+  function isOverdue(dueAt: string, status: string): boolean {
+    return (status === 'pending' || status === 'snoozed') && new Date(dueAt) < new Date();
+  }
+
+  const columns: ColumnDef<Reminder, unknown>[] = [
+    {
+      accessorKey: 'priority',
+      header: '',
+      cell: ({ row }) => {
+        const config = PRIORITY_CONFIG[row.original.priority];
+        return <Badge className={`${config.className} text-[10px] px-1.5`}>{config.label}</Badge>;
+      },
+      size: 70,
+    },
+    {
+      accessorKey: 'title',
+      header: 'Reminder',
+      cell: ({ row }) => {
+        const overdue = isOverdue(row.original.dueAt, row.original.status);
+        return (
+          <div className="flex flex-col gap-0.5">
+            <div className="flex items-center gap-2">
+              <span className="font-medium">{row.original.title}</span>
+              {row.original.autoGenerated && (
+                <Badge variant="outline" className="text-[10px]">
+                  Auto
+                </Badge>
+              )}
+              {overdue && <AlertTriangle className="h-3.5 w-3.5 text-destructive" />}
+            </div>
+            {row.original.client && (
+              <span className="text-xs text-muted-foreground">
+                Client: {row.original.client.fullName}
+              </span>
+            )}
+            {row.original.berth && (
+              <span className="text-xs text-muted-foreground">
+                Berth: {row.original.berth.mooringNumber}
+              </span>
+            )}
+          </div>
+        );
+      },
+    },
+    {
+      accessorKey: 'dueAt',
+      header: 'Due',
+      cell: ({ row }) => {
+        const overdue = isOverdue(row.original.dueAt, row.original.status);
+        const date = new Date(row.original.dueAt);
+        return (
+          <div className={overdue ? 'text-destructive font-medium' : ''}>
+            <div className="text-sm">{date.toLocaleDateString()}</div>
+            <div className="text-xs text-muted-foreground">
+              {formatDistanceToNow(date, { addSuffix: true })}
+            </div>
+          </div>
+        );
+      },
+    },
+    {
+      accessorKey: 'status',
+      header: 'Status',
+      cell: ({ row }) => {
+        const config = STATUS_CONFIG[row.original.status];
+        const Icon = config.icon;
+        return (
+          <div className="flex items-center gap-1.5 text-sm">
+            <Icon className="h-3.5 w-3.5" />
+            {config.label}
+          </div>
+        );
+      },
+    },
+    {
+      id: 'actions',
+      header: '',
+      cell: ({ row }) => {
+        if (row.original.status === 'completed' || row.original.status === 'dismissed') {
+          return null;
+        }
+        return (
+          <div className="flex items-center justify-end gap-1">
+            <Button
+              variant="ghost"
+              size="sm"
+              className="text-green-600 hover:text-green-700"
+              onClick={() => handleComplete(row.original.id)}
+            >
+              <CheckCircle2 className="h-4 w-4" />
+            </Button>
+            <Button variant="ghost" size="sm" onClick={() => setSnoozingId(row.original.id)}>
+              <Clock className="h-4 w-4" />
+            </Button>
+            <Button
+              variant="ghost"
+              size="sm"
+              className="text-muted-foreground hover:text-foreground"
+              onClick={() => handleDismiss(row.original.id)}
+            >
+              <XCircle className="h-4 w-4" />
+            </Button>
+          </div>
+        );
+      },
+      enableSorting: false,
+      size: 120,
+    },
+  ];
+
+  return (
+    <div>
+      <PageHeader
+        title="Reminders"
+        description={`${total} reminder${total !== 1 ? 's' : ''}`}
+        actions={
+          <Button
+            onClick={() => {
+              setEditingReminder(null);
+              setFormOpen(true);
+            }}
+          >
+            <Plus className="mr-1.5 h-4 w-4" />
+            New Reminder
+          </Button>
+        }
+      />
+
+      <div className="flex items-center gap-4 mb-4">
+        {canViewAll && (
+          <Tabs value={viewMode} onValueChange={(v) => setViewMode(v as 'my' | 'all')}>
+            <TabsList>
+              <TabsTrigger value="my">My Reminders</TabsTrigger>
+              <TabsTrigger value="all">All Reminders</TabsTrigger>
+            </TabsList>
+          </Tabs>
+        )}
+
+        {viewMode === 'all' && (
+          <Select value={statusFilter} onValueChange={setStatusFilter}>
+            <SelectTrigger className="w-32">
+              <SelectValue />
+            </SelectTrigger>
+            <SelectContent>
+              <SelectItem value="active">Active</SelectItem>
+              <SelectItem value="pending">Pending</SelectItem>
+              <SelectItem value="snoozed">Snoozed</SelectItem>
+              <SelectItem value="completed">Completed</SelectItem>
+              <SelectItem value="dismissed">Dismissed</SelectItem>
+              <SelectItem value="all">All</SelectItem>
+            </SelectContent>
+          </Select>
+        )}
+
+        <Select value={priorityFilter} onValueChange={setPriorityFilter}>
+          <SelectTrigger className="w-32">
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="all">All Priorities</SelectItem>
+            <SelectItem value="urgent">Urgent</SelectItem>
+            <SelectItem value="high">High</SelectItem>
+            <SelectItem value="medium">Medium</SelectItem>
+            <SelectItem value="low">Low</SelectItem>
+          </SelectContent>
+        </Select>
+      </div>
+
+      <DataTable
+        columns={columns}
+        data={reminders}
+        isLoading={loading}
+        getRowId={(row) => row.id}
+        emptyState={
+          <div className="text-center py-8">
+            <Bell className="mx-auto h-8 w-8 text-muted-foreground mb-2" />
+            <p className="text-muted-foreground">No reminders.</p>
+            <Button
+              variant="link"
+              onClick={() => {
+                setEditingReminder(null);
+                setFormOpen(true);
+              }}
+              className="mt-2"
+            >
+              Create your first reminder
+            </Button>
+          </div>
+        }
+      />
+
+      <ReminderForm
+        open={formOpen}
+        onOpenChange={setFormOpen}
+        reminder={editingReminder}
+        onSuccess={fetchReminders}
+      />
+
+      <SnoozeDialog
+        open={!!snoozingId}
+        onOpenChange={(open) => {
+          if (!open) setSnoozingId(null);
+        }}
+        reminderId={snoozingId}
+        onSuccess={fetchReminders}
+      />
+    </div>
+  );
+}
diff --git a/src/components/reminders/snooze-dialog.tsx b/src/components/reminders/snooze-dialog.tsx
new file mode 100644
index 0000000..d6b52ac
--- /dev/null
+++ b/src/components/reminders/snooze-dialog.tsx
@@ -0,0 +1,119 @@
+'use client';
+
+import { useState } from 'react';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  DialogFooter,
+} from '@/components/ui/dialog';
+import { apiFetch } from '@/lib/api/client';
+
+interface SnoozeDialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  reminderId: string | null;
+  onSuccess: () => void;
+}
+
+const PRESETS = [
+  { label: '1 hour', hours: 1 },
+  { label: '4 hours', hours: 4 },
+  { label: 'Tomorrow 9 AM', hours: -1 }, // special case
+  { label: 'Next week', hours: -2 }, // special case
+] as const;
+
+function getPresetDate(preset: (typeof PRESETS)[number]): Date {
+  const now = new Date();
+  if (preset.hours === -1) {
+    // Tomorrow 9 AM
+    const tomorrow = new Date(now);
+    tomorrow.setDate(tomorrow.getDate() + 1);
+    tomorrow.setHours(9, 0, 0, 0);
+    return tomorrow;
+  }
+  if (preset.hours === -2) {
+    // Next Monday 9 AM
+    const next = new Date(now);
+    const daysUntilMonday = (8 - next.getDay()) % 7 || 7;
+    next.setDate(next.getDate() + daysUntilMonday);
+    next.setHours(9, 0, 0, 0);
+    return next;
+  }
+  return new Date(now.getTime() + preset.hours * 60 * 60 * 1000);
+}
+
+export function SnoozeDialog({ open, onOpenChange, reminderId, onSuccess }: SnoozeDialogProps) {
+  const [customDate, setCustomDate] = useState('');
+  const [loading, setLoading] = useState(false);
+
+  async function handleSnooze(snoozeUntil: string) {
+    if (!reminderId) return;
+    setLoading(true);
+    try {
+      await apiFetch(`/api/v1/reminders/${reminderId}/snooze`, {
+        method: 'POST',
+        body: { snoozeUntil },
+      });
+      onSuccess();
+      onOpenChange(false);
+    } finally {
+      setLoading(false);
+    }
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="sm:max-w-sm">
+        <DialogHeader>
+          <DialogTitle>Snooze Reminder</DialogTitle>
+        </DialogHeader>
+
+        <div className="space-y-3 py-2">
+          <div className="grid grid-cols-2 gap-2">
+            {PRESETS.map((preset) => (
+              <Button
+                key={preset.label}
+                variant="outline"
+                className="justify-start"
+                disabled={loading}
+                onClick={() => handleSnooze(getPresetDate(preset).toISOString())}
+              >
+                {preset.label}
+              </Button>
+            ))}
+          </div>
+
+          <div className="space-y-2 pt-2">
+            <Label htmlFor="custom-snooze">Custom date & time</Label>
+            <div className="flex gap-2">
+              <Input
+                id="custom-snooze"
+                type="datetime-local"
+                value={customDate}
+                onChange={(e) => setCustomDate(e.target.value)}
+                className="flex-1"
+              />
+              <Button
+                disabled={loading || !customDate}
+                onClick={() => handleSnooze(new Date(customDate).toISOString())}
+              >
+                Snooze
+              </Button>
+            </div>
+          </div>
+        </div>
+
+        <DialogFooter>
+          <Button variant="ghost" onClick={() => onOpenChange(false)} disabled={loading}>
+            Cancel
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
diff --git a/src/lib/queue/workers/notifications.ts b/src/lib/queue/workers/notifications.ts
index 021dc05..b249544 100644
--- a/src/lib/queue/workers/notifications.ts
+++ b/src/lib/queue/workers/notifications.ts
@@ -24,10 +24,17 @@ export const notificationsWorker = new Worker(
         break;
       }
       case 'reminder-check': {
-        const { processDocumentReminders } = await import(
-          '@/jobs/processors/document-reminder'
-        );
+        // Document signing reminders (EOI)
+        const { processDocumentReminders } = await import('@/jobs/processors/document-reminder');
         await processDocumentReminders();
+        // CRM follow-up reminders (BR-060)
+        const { processFollowUpReminders } = await import('@/lib/services/reminders.service');
+        await processFollowUpReminders();
+        break;
+      }
+      case 'reminder-overdue-check': {
+        const { processOverdueReminders } = await import('@/lib/services/reminders.service');
+        await processOverdueReminders();
         break;
       }
       case 'send-notification-email': {
@@ -57,9 +64,7 @@ export const notificationsWorker = new Worker(
           authUser.email,
           `[Port Nimara] ${notif.title}`,
           `<p>${notif.description ?? notif.title}</p>${
-            notif.link
-              ? `<p><a href="${process.env.APP_URL}${notif.link}">View in CRM</a></p>`
-              : ''
+            notif.link ? `<p><a href="${process.env.APP_URL}${notif.link}">View in CRM</a></p>` : ''
           }`,
         );
 
diff --git a/src/lib/services/reminders.service.ts b/src/lib/services/reminders.service.ts
new file mode 100644
index 0000000..fb9563a
--- /dev/null
+++ b/src/lib/services/reminders.service.ts
@@ -0,0 +1,468 @@
+import { and, eq, lte, gte, desc, asc, inArray, sql, isNull } from 'drizzle-orm';
+
+import { db } from '@/lib/db';
+import { reminders, interests, clients } from '@/lib/db/schema';
+import { createAuditLog } from '@/lib/audit';
+import { NotFoundError, ValidationError } from '@/lib/errors';
+import { emitToRoom } from '@/lib/socket/server';
+import { createNotification } from '@/lib/services/notifications.service';
+import { logger } from '@/lib/logger';
+import type {
+  CreateReminderInput,
+  UpdateReminderInput,
+  SnoozeReminderInput,
+  ReminderListQuery,
+} from '@/lib/validators/reminders';
+
+interface AuditMeta {
+  userId: string;
+  portId: string;
+  ipAddress: string;
+  userAgent: string;
+}
+
+// ─── List ────────────────────────────────────────────────────────────────────
+
+export async function listReminders(portId: string, query: ReminderListQuery) {
+  const conditions = [eq(reminders.portId, portId)];
+
+  if (query.status) conditions.push(eq(reminders.status, query.status));
+  if (query.priority) conditions.push(eq(reminders.priority, query.priority));
+  if (query.assignedTo) conditions.push(eq(reminders.assignedTo, query.assignedTo));
+  if (query.clientId) conditions.push(eq(reminders.clientId, query.clientId));
+  if (query.interestId) conditions.push(eq(reminders.interestId, query.interestId));
+  if (query.berthId) conditions.push(eq(reminders.berthId, query.berthId));
+  if (query.dueBefore) conditions.push(lte(reminders.dueAt, new Date(query.dueBefore)));
+  if (query.dueAfter) conditions.push(gte(reminders.dueAt, new Date(query.dueAfter)));
+
+  if (query.search) {
+    conditions.push(sql`${reminders.title} ILIKE ${'%' + query.search + '%'}`);
+  }
+
+  const orderDir = query.order === 'asc' ? asc : desc;
+  const orderCol = query.sort === 'priority' ? reminders.priority : reminders.dueAt;
+
+  const offset = (query.page - 1) * query.limit;
+
+  const [data, countResult] = await Promise.all([
+    db
+      .select()
+      .from(reminders)
+      .where(and(...conditions))
+      .orderBy(orderDir(orderCol))
+      .limit(query.limit)
+      .offset(offset),
+    db
+      .select({ count: sql<number>`count(*)` })
+      .from(reminders)
+      .where(and(...conditions)),
+  ]);
+
+  return {
+    data,
+    pagination: {
+      page: query.page,
+      limit: query.limit,
+      total: Number(countResult[0]?.count ?? 0),
+    },
+  };
+}
+
+export async function getMyReminders(userId: string, portId: string) {
+  return db
+    .select()
+    .from(reminders)
+    .where(
+      and(
+        eq(reminders.portId, portId),
+        eq(reminders.assignedTo, userId),
+        inArray(reminders.status, ['pending', 'snoozed']),
+      ),
+    )
+    .orderBy(asc(reminders.dueAt));
+}
+
+export async function getOverdueReminders(portId: string) {
+  return db
+    .select()
+    .from(reminders)
+    .where(
+      and(
+        eq(reminders.portId, portId),
+        inArray(reminders.status, ['pending', 'snoozed']),
+        lte(reminders.dueAt, new Date()),
+      ),
+    )
+    .orderBy(asc(reminders.dueAt));
+}
+
+export async function getUpcomingReminders(portId: string, days: number = 14) {
+  const until = new Date();
+  until.setDate(until.getDate() + days);
+
+  return db
+    .select()
+    .from(reminders)
+    .where(
+      and(
+        eq(reminders.portId, portId),
+        inArray(reminders.status, ['pending', 'snoozed']),
+        lte(reminders.dueAt, until),
+        gte(reminders.dueAt, new Date()),
+      ),
+    )
+    .orderBy(asc(reminders.dueAt));
+}
+
+// ─── CRUD ────────────────────────────────────────────────────────────────────
+
+export async function getReminder(id: string, portId: string) {
+  const reminder = await db.query.reminders.findFirst({
+    where: and(eq(reminders.id, id), eq(reminders.portId, portId)),
+    with: { client: true, interest: true, berth: true },
+  });
+  if (!reminder) throw new NotFoundError('Reminder');
+  return reminder;
+}
+
+export async function createReminder(portId: string, data: CreateReminderInput, meta: AuditMeta) {
+  const [reminder] = await db
+    .insert(reminders)
+    .values({
+      portId,
+      title: data.title,
+      note: data.note ?? null,
+      dueAt: new Date(data.dueAt),
+      priority: data.priority,
+      assignedTo: data.assignedTo ?? meta.userId,
+      createdBy: meta.userId,
+      clientId: data.clientId ?? null,
+      interestId: data.interestId ?? null,
+      berthId: data.berthId ?? null,
+    })
+    .returning();
+
+  void createAuditLog({
+    userId: meta.userId,
+    portId,
+    action: 'create',
+    entityType: 'reminder',
+    entityId: reminder!.id,
+    newValue: { title: reminder!.title, dueAt: reminder!.dueAt, priority: reminder!.priority },
+    ipAddress: meta.ipAddress,
+    userAgent: meta.userAgent,
+  });
+
+  emitToRoom(`port:${portId}`, 'reminder:created', {
+    reminderId: reminder!.id,
+    title: reminder!.title,
+    dueAt: reminder!.dueAt.toISOString(),
+    assignedTo: reminder!.assignedTo ?? meta.userId,
+  });
+
+  if (reminder!.assignedTo) {
+    emitToRoom(`user:${reminder!.assignedTo}`, 'reminder:created', {
+      reminderId: reminder!.id,
+      title: reminder!.title,
+      dueAt: reminder!.dueAt.toISOString(),
+      assignedTo: reminder!.assignedTo,
+    });
+  }
+
+  return reminder!;
+}
+
+export async function updateReminder(
+  id: string,
+  portId: string,
+  data: UpdateReminderInput,
+  meta: AuditMeta,
+) {
+  const existing = await db.query.reminders.findFirst({
+    where: and(eq(reminders.id, id), eq(reminders.portId, portId)),
+  });
+  if (!existing) throw new NotFoundError('Reminder');
+
+  const updates: Record<string, unknown> = { updatedAt: new Date() };
+  if (data.title !== undefined) updates.title = data.title;
+  if (data.note !== undefined) updates.note = data.note;
+  if (data.dueAt !== undefined) updates.dueAt = new Date(data.dueAt);
+  if (data.priority !== undefined) updates.priority = data.priority;
+  if (data.assignedTo !== undefined) updates.assignedTo = data.assignedTo;
+  if (data.clientId !== undefined) updates.clientId = data.clientId;
+  if (data.interestId !== undefined) updates.interestId = data.interestId;
+  if (data.berthId !== undefined) updates.berthId = data.berthId;
+
+  const [updated] = await db
+    .update(reminders)
+    .set(updates)
+    .where(and(eq(reminders.id, id), eq(reminders.portId, portId)))
+    .returning();
+
+  void createAuditLog({
+    userId: meta.userId,
+    portId,
+    action: 'update',
+    entityType: 'reminder',
+    entityId: id,
+    oldValue: { title: existing.title, dueAt: existing.dueAt, priority: existing.priority },
+    newValue: { title: updated!.title, dueAt: updated!.dueAt, priority: updated!.priority },
+    ipAddress: meta.ipAddress,
+    userAgent: meta.userAgent,
+  });
+
+  emitToRoom(`port:${portId}`, 'reminder:updated', {
+    reminderId: updated!.id,
+    changedFields: Object.keys(data),
+  });
+
+  return updated!;
+}
+
+export async function deleteReminder(id: string, portId: string, meta: AuditMeta) {
+  const existing = await db.query.reminders.findFirst({
+    where: and(eq(reminders.id, id), eq(reminders.portId, portId)),
+  });
+  if (!existing) throw new NotFoundError('Reminder');
+
+  await db.delete(reminders).where(and(eq(reminders.id, id), eq(reminders.portId, portId)));
+
+  void createAuditLog({
+    userId: meta.userId,
+    portId,
+    action: 'delete',
+    entityType: 'reminder',
+    entityId: id,
+    oldValue: { title: existing.title },
+    ipAddress: meta.ipAddress,
+    userAgent: meta.userAgent,
+  });
+}
+
+// ─── Status Actions ──────────────────────────────────────────────────────────
+
+export async function completeReminder(id: string, portId: string, meta: AuditMeta) {
+  const existing = await db.query.reminders.findFirst({
+    where: and(eq(reminders.id, id), eq(reminders.portId, portId)),
+  });
+  if (!existing) throw new NotFoundError('Reminder');
+  if (existing.status === 'completed') throw new ValidationError('Reminder already completed');
+
+  const [updated] = await db
+    .update(reminders)
+    .set({
+      status: 'completed',
+      completedAt: new Date(),
+      updatedAt: new Date(),
+    })
+    .where(and(eq(reminders.id, id), eq(reminders.portId, portId)))
+    .returning();
+
+  void createAuditLog({
+    userId: meta.userId,
+    portId,
+    action: 'update',
+    entityType: 'reminder',
+    entityId: id,
+    oldValue: { status: existing.status },
+    newValue: { status: 'completed' },
+    ipAddress: meta.ipAddress,
+    userAgent: meta.userAgent,
+  });
+
+  emitToRoom(`port:${portId}`, 'reminder:completed', {
+    reminderId: updated!.id,
+    title: updated!.title,
+    completedBy: meta.userId,
+  });
+
+  return updated!;
+}
+
+export async function snoozeReminder(
+  id: string,
+  portId: string,
+  data: SnoozeReminderInput,
+  meta: AuditMeta,
+) {
+  const existing = await db.query.reminders.findFirst({
+    where: and(eq(reminders.id, id), eq(reminders.portId, portId)),
+  });
+  if (!existing) throw new NotFoundError('Reminder');
+
+  const [updated] = await db
+    .update(reminders)
+    .set({
+      status: 'snoozed',
+      snoozedUntil: new Date(data.snoozeUntil),
+      updatedAt: new Date(),
+    })
+    .where(and(eq(reminders.id, id), eq(reminders.portId, portId)))
+    .returning();
+
+  void createAuditLog({
+    userId: meta.userId,
+    portId,
+    action: 'update',
+    entityType: 'reminder',
+    entityId: id,
+    oldValue: { status: existing.status },
+    newValue: { status: 'snoozed', snoozedUntil: data.snoozeUntil },
+    ipAddress: meta.ipAddress,
+    userAgent: meta.userAgent,
+  });
+
+  emitToRoom(`port:${portId}`, 'reminder:snoozed', {
+    reminderId: updated!.id,
+    snoozedUntil: data.snoozeUntil,
+  });
+
+  return updated!;
+}
+
+export async function dismissReminder(id: string, portId: string, meta: AuditMeta) {
+  const existing = await db.query.reminders.findFirst({
+    where: and(eq(reminders.id, id), eq(reminders.portId, portId)),
+  });
+  if (!existing) throw new NotFoundError('Reminder');
+
+  const [updated] = await db
+    .update(reminders)
+    .set({ status: 'dismissed', updatedAt: new Date() })
+    .where(and(eq(reminders.id, id), eq(reminders.portId, portId)))
+    .returning();
+
+  void createAuditLog({
+    userId: meta.userId,
+    portId,
+    action: 'update',
+    entityType: 'reminder',
+    entityId: id,
+    oldValue: { status: existing.status },
+    newValue: { status: 'dismissed' },
+    ipAddress: meta.ipAddress,
+    userAgent: meta.userAgent,
+  });
+
+  return updated!;
+}
+
+// ─── Background Processors ──────────────────────────────────────────────────
+
+/**
+ * Hourly check: creates auto-follow-up reminders for interests with
+ * reminderEnabled=true where no activity in reminderDays days (BR-060).
+ */
+export async function processFollowUpReminders() {
+  const ports = await db.query.ports.findMany({ where: eq(sql`true`, true) });
+
+  for (const port of ports) {
+    const enabledInterests = await db
+      .select({
+        id: interests.id,
+        clientId: interests.clientId,
+        reminderDays: interests.reminderDays,
+        reminderLastFired: interests.reminderLastFired,
+        updatedAt: interests.updatedAt,
+      })
+      .from(interests)
+      .where(
+        and(
+          eq(interests.portId, port.id),
+          eq(interests.reminderEnabled, true),
+          isNull(interests.archivedAt),
+        ),
+      );
+
+    const now = new Date();
+
+    for (const interest of enabledInterests) {
+      if (!interest.reminderDays) continue;
+
+      // Check if enough days have passed since last activity
+      const lastActivity = interest.reminderLastFired ?? interest.updatedAt;
+      const daysSinceActivity = (now.getTime() - lastActivity.getTime()) / (1000 * 60 * 60 * 24);
+
+      if (daysSinceActivity < interest.reminderDays) continue;
+
+      // Get client name for the reminder title
+      const client = interest.clientId
+        ? await db.query.clients.findFirst({ where: eq(clients.id, interest.clientId) })
+        : null;
+
+      const title = client ? `Follow up with ${client.fullName}` : 'Follow up on interest';
+
+      // Find the assigned user (first userPortRole for this port, or fallback)
+      // For now, leave assignedTo null — the notification goes to the port room
+      await db.insert(reminders).values({
+        portId: port.id,
+        title,
+        note: 'Auto-generated: no activity detected within the configured follow-up window.',
+        dueAt: now,
+        priority: 'medium',
+        assignedTo: null,
+        createdBy: 'system',
+        interestId: interest.id,
+        clientId: interest.clientId,
+        autoGenerated: true,
+      });
+
+      // Update last fired timestamp
+      await db
+        .update(interests)
+        .set({ reminderLastFired: now })
+        .where(eq(interests.id, interest.id));
+
+      // Fire notification to the port room
+      emitToRoom(`port:${port.id}`, 'system:alert', {
+        alertType: 'follow_up_created',
+        message: title,
+        severity: 'info',
+      });
+
+      logger.info({ interestId: interest.id, portId: port.id }, 'Auto follow-up reminder created');
+    }
+  }
+}
+
+/**
+ * Every 15 minutes: checks for past-due reminders and creates overdue notifications.
+ */
+export async function processOverdueReminders() {
+  const now = new Date();
+
+  // Find pending reminders past their due date
+  const overdueReminders = await db
+    .select()
+    .from(reminders)
+    .where(and(eq(reminders.status, 'pending'), lte(reminders.dueAt, now)));
+
+  for (const reminder of overdueReminders) {
+    if (reminder.assignedTo) {
+      void createNotification({
+        portId: reminder.portId,
+        userId: reminder.assignedTo,
+        type: 'reminder_overdue',
+        title: 'Reminder overdue',
+        description: reminder.title,
+        entityType: 'reminder',
+        entityId: reminder.id,
+        link: '/reminders',
+      });
+
+      emitToRoom(`user:${reminder.assignedTo}`, 'reminder:overdue', {
+        reminderId: reminder.id,
+        title: reminder.title,
+        dueAt: reminder.dueAt.toISOString(),
+      });
+    }
+  }
+
+  // Also un-snooze reminders whose snooze period has passed
+  await db
+    .update(reminders)
+    .set({ status: 'pending', snoozedUntil: null, updatedAt: now })
+    .where(and(eq(reminders.status, 'snoozed'), lte(reminders.snoozedUntil, now)));
+
+  logger.info({ overdueCount: overdueReminders.length }, 'Processed overdue reminders');
+}
diff --git a/src/lib/validators/reminders.ts b/src/lib/validators/reminders.ts
new file mode 100644
index 0000000..545e2ec
--- /dev/null
+++ b/src/lib/validators/reminders.ts
@@ -0,0 +1,47 @@
+import { z } from 'zod';
+import { baseListQuerySchema } from '@/lib/api/route-helpers';
+
+export const createReminderSchema = z.object({
+  title: z.string().min(1).max(300),
+  note: z.string().max(2000).optional(),
+  dueAt: z.string().datetime(),
+  priority: z.enum(['low', 'medium', 'high', 'urgent']).default('medium'),
+  assignedTo: z.string().optional(),
+  clientId: z.string().uuid().optional(),
+  interestId: z.string().uuid().optional(),
+  berthId: z.string().uuid().optional(),
+});
+
+export type CreateReminderInput = z.infer<typeof createReminderSchema>;
+
+export const updateReminderSchema = z.object({
+  title: z.string().min(1).max(300).optional(),
+  note: z.string().max(2000).nullable().optional(),
+  dueAt: z.string().datetime().optional(),
+  priority: z.enum(['low', 'medium', 'high', 'urgent']).optional(),
+  assignedTo: z.string().nullable().optional(),
+  clientId: z.string().uuid().nullable().optional(),
+  interestId: z.string().uuid().nullable().optional(),
+  berthId: z.string().uuid().nullable().optional(),
+});
+
+export type UpdateReminderInput = z.infer<typeof updateReminderSchema>;
+
+export const snoozeReminderSchema = z.object({
+  snoozeUntil: z.string().datetime(),
+});
+
+export type SnoozeReminderInput = z.infer<typeof snoozeReminderSchema>;
+
+export const reminderListQuerySchema = baseListQuerySchema.extend({
+  status: z.enum(['pending', 'snoozed', 'completed', 'dismissed']).optional(),
+  priority: z.enum(['low', 'medium', 'high', 'urgent']).optional(),
+  assignedTo: z.string().optional(),
+  clientId: z.string().uuid().optional(),
+  interestId: z.string().uuid().optional(),
+  berthId: z.string().uuid().optional(),
+  dueBefore: z.string().datetime().optional(),
+  dueAfter: z.string().datetime().optional(),
+});
+
+export type ReminderListQuery = z.infer<typeof reminderListQuerySchema>;