diff --git a/packages/backend/src/db/queries/issues.ts b/packages/backend/src/db/queries/issues.ts
index 6e58f90..c47f52f 100644
--- a/packages/backend/src/db/queries/issues.ts
+++ b/packages/backend/src/db/queries/issues.ts
@@ -97,6 +97,35 @@ export async function getIssueByID(id: number) {
     return issue;
 }
 
+export async function getIssueWithUsersById(issueId: number): Promise<IssueResponse | null> {
+    const Creator = aliasedTable(User, "Creator");
+
+    const [issueWithCreator] = await db
+        .select({
+            Issue: Issue,
+            Creator: Creator,
+        })
+        .from(Issue)
+        .where(eq(Issue.id, issueId))
+        .innerJoin(Creator, eq(Issue.creatorId, Creator.id));
+
+    if (!issueWithCreator) return null;
+
+    const assigneesData = await db
+        .select({
+            User: User,
+        })
+        .from(IssueAssignee)
+        .innerJoin(User, eq(IssueAssignee.userId, User.id))
+        .where(eq(IssueAssignee.issueId, issueId));
+
+    return {
+        Issue: issueWithCreator.Issue,
+        Creator: issueWithCreator.Creator,
+        Assignees: assigneesData.map((row) => row.User),
+    };
+}
+
 export async function getIssueByNumber(projectId: number, number: number) {
     const [issue] = await db
         .select()
diff --git a/packages/backend/src/db/queries/timed-sessions.ts b/packages/backend/src/db/queries/timed-sessions.ts
index cb94b9e..d0a0ee4 100644
--- a/packages/backend/src/db/queries/timed-sessions.ts
+++ b/packages/backend/src/db/queries/timed-sessions.ts
@@ -1,4 +1,4 @@
-import { TimedSession } from "@sprint/shared";
+import { Issue, Project, TimedSession } from "@sprint/shared";
 import { and, desc, eq, isNotNull, isNull } from "drizzle-orm";
 import { db } from "../client";
 
@@ -80,6 +80,26 @@ export async function getUserTimedSessions(userId: number, limit = 50, offset =
     return timedSessions;
 }
 
+export async function getActiveTimedSessionsWithIssue(userId: number) {
+    const timedSessions = await db
+        .select({
+            id: TimedSession.id,
+            userId: TimedSession.userId,
+            issueId: TimedSession.issueId,
+            timestamps: TimedSession.timestamps,
+            endedAt: TimedSession.endedAt,
+            createdAt: TimedSession.createdAt,
+            issueNumber: Issue.number,
+            projectKey: Project.key,
+        })
+        .from(TimedSession)
+        .innerJoin(Issue, eq(TimedSession.issueId, Issue.id))
+        .innerJoin(Project, eq(Issue.projectId, Project.id))
+        .where(and(eq(TimedSession.userId, userId), isNull(TimedSession.endedAt)))
+        .orderBy(desc(TimedSession.createdAt));
+    return timedSessions;
+}
+
 export async function getCompletedTimedSessions(userId: number, limit = 50, offset = 0) {
     const timedSessions = await db
         .select()
diff --git a/packages/backend/src/index.ts b/packages/backend/src/index.ts
index ef59beb..22ecdb6 100644
--- a/packages/backend/src/index.ts
+++ b/packages/backend/src/index.ts
@@ -43,6 +43,7 @@ const main = async () => {
             "/user/upload-avatar": withGlobal(withAuth(withCSRF(routes.userUploadAvatar))),
 
             "/issue/create": withGlobal(withAuth(withCSRF(routes.issueCreate))),
+            "/issue/by-id": withGlobal(withAuth(routes.issueById)),
             "/issue/update": withGlobal(withAuth(withCSRF(routes.issueUpdate))),
             "/issue/delete": withGlobal(withAuth(withCSRF(routes.issueDelete))),
             "/issue-comment/create": withGlobal(withAuth(withCSRF(routes.issueCommentCreate))),
diff --git a/packages/backend/src/routes/index.ts b/packages/backend/src/routes/index.ts
index 03e2c9f..2176fdb 100644
--- a/packages/backend/src/routes/index.ts
+++ b/packages/backend/src/routes/index.ts
@@ -2,6 +2,7 @@ import authLogin from "./auth/login";
 import authLogout from "./auth/logout";
 import authMe from "./auth/me";
 import authRegister from "./auth/register";
+import issueById from "./issue/by-id";
 import issueCreate from "./issue/create";
 import issueDelete from "./issue/delete";
 import issueUpdate from "./issue/update";
@@ -56,6 +57,7 @@ export const routes = {
     userUploadAvatar,
 
     issueCreate,
+    issueById,
     issueDelete,
     issueUpdate,
 
diff --git a/packages/backend/src/routes/issue/by-id.ts b/packages/backend/src/routes/issue/by-id.ts
new file mode 100644
index 0000000..27d8528
--- /dev/null
+++ b/packages/backend/src/routes/issue/by-id.ts
@@ -0,0 +1,29 @@
+import { IssueByIdQuerySchema } from "@sprint/shared";
+import type { AuthedRequest } from "../../auth/middleware";
+import { getIssueOrganisationId, getIssueWithUsersById, getOrganisationMemberRole } from "../../db/queries";
+import { errorResponse, parseQueryParams } from "../../validation";
+
+export default async function issueById(req: AuthedRequest) {
+    const url = new URL(req.url);
+    const parsed = parseQueryParams(url, IssueByIdQuerySchema);
+    if ("error" in parsed) return parsed.error;
+
+    const { issueId } = parsed.data;
+
+    const organisationId = await getIssueOrganisationId(issueId);
+    if (!organisationId) {
+        return errorResponse(`organisation not found for issue ${issueId}`, "ORG_NOT_FOUND", 404);
+    }
+
+    const member = await getOrganisationMemberRole(organisationId, req.userId);
+    if (!member) {
+        return errorResponse("forbidden", "FORBIDDEN", 403);
+    }
+
+    const issue = await getIssueWithUsersById(issueId);
+    if (!issue) {
+        return errorResponse(`issue not found: ${issueId}`, "ISSUE_NOT_FOUND", 404);
+    }
+
+    return Response.json(issue);
+}
diff --git a/packages/backend/src/routes/timers.ts b/packages/backend/src/routes/timers.ts
index 6d5a1b4..af80c77 100644
--- a/packages/backend/src/routes/timers.ts
+++ b/packages/backend/src/routes/timers.ts
@@ -1,15 +1,34 @@
 import { calculateBreakTimeMs, calculateWorkTimeMs, isTimerRunning } from "@sprint/shared";
 import type { AuthedRequest } from "../auth/middleware";
-import { getUserTimedSessions } from "../db/queries";
+import { getActiveTimedSessionsWithIssue, getUserTimedSessions } from "../db/queries";
 
 // GET /timers?limit=50&offset=0
 export default async function timers(req: AuthedRequest) {
     const url = new URL(req.url);
     const limitParam = url.searchParams.get("limit");
     const offsetParam = url.searchParams.get("offset");
+    const activeOnlyParam = url.searchParams.get("activeOnly");
 
     const limit = limitParam ? Number(limitParam) : 50;
     const offset = offsetParam ? Number(offsetParam) : 0;
+    const activeOnly = activeOnlyParam === "true" || activeOnlyParam === "1";
+
+    if (activeOnly) {
+        const sessions = await getActiveTimedSessionsWithIssue(req.userId);
+        const enriched = sessions.map((session) => ({
+            id: session.id,
+            issueId: session.issueId,
+            issueNumber: session.issueNumber,
+            projectKey: session.projectKey,
+            timestamps: session.timestamps,
+            endedAt: session.endedAt,
+            workTimeMs: calculateWorkTimeMs(session.timestamps),
+            breakTimeMs: calculateBreakTimeMs(session.timestamps),
+            isRunning: isTimerRunning(session.timestamps),
+        }));
+
+        return Response.json(enriched);
+    }
 
     const sessions = await getUserTimedSessions(req.userId, limit, offset);
 
diff --git a/packages/frontend/src/components/active-timers-overlay.tsx b/packages/frontend/src/components/active-timers-overlay.tsx
new file mode 100644
index 0000000..d214a56
--- /dev/null
+++ b/packages/frontend/src/components/active-timers-overlay.tsx
@@ -0,0 +1,94 @@
+import { useEffect, useMemo, useState } from "react";
+import { IssueModal } from "@/components/issue-modal";
+import { useSessionSafe } from "@/components/session-provider";
+import { TimerControls } from "@/components/timer-controls";
+import { getWorkTimeMs } from "@/components/timer-display";
+import { Button } from "@/components/ui/button";
+import { useActiveTimers, useInactiveTimers, useIssueById } from "@/lib/query/hooks";
+import { issueID } from "@/lib/utils";
+
+const REFRESH_INTERVAL_MS = 10000;
+
+export function ActiveTimersOverlay() {
+  const session = useSessionSafe();
+  const { data: activeTimers = [] } = useActiveTimers({
+    refetchInterval: REFRESH_INTERVAL_MS,
+    enabled: Boolean(session?.user),
+  });
+  const [tick, setTick] = useState(0);
+
+  const hasRunning = useMemo(() => activeTimers.some((timer) => timer.isRunning), [activeTimers]);
+
+  useEffect(() => {
+    if (!hasRunning) return;
+    const interval = window.setInterval(() => {
+      setTick((value) => value + 1);
+    }, 1000);
+    return () => window.clearInterval(interval);
+  }, [hasRunning]);
+
+  void tick;
+
+  if (!session?.user || activeTimers.length === 0) return null;
+
+  return (
+    <div className="fixed bottom-[calc(1rem+env(safe-area-inset-bottom))] left-[calc(1rem+env(safe-area-inset-left))] z-50 flex flex-col gap-2">
+      {activeTimers.map((timer) => (
+        <ActiveTimerItem key={timer.id} timer={timer} />
+      ))}
+    </div>
+  );
+}
+
+function ActiveTimerItem({
+  timer,
+}: {
+  timer: {
+    id: number;
+    issueId: number;
+    issueNumber: number;
+    projectKey: string;
+    timestamps: string[];
+    isRunning: boolean;
+  };
+}) {
+  const { data: issueData } = useIssueById(timer.issueId);
+  const { data: inactiveTimers = [] } = useInactiveTimers(timer.issueId, { refetchInterval: 10000 });
+  const [open, setOpen] = useState(false);
+  const issueKey = issueID(timer.projectKey, timer.issueNumber);
+
+  const inactiveWorkTimeMs = inactiveTimers.reduce(
+    (total, session) => total + getWorkTimeMs(session?.timestamps),
+    0,
+  );
+  const currentWorkTimeMs = getWorkTimeMs(timer.timestamps);
+  const totalWorkTimeMs = inactiveWorkTimeMs + currentWorkTimeMs;
+
+  const issueKeyNode = issueData ? (
+    <IssueModal
+      issueData={issueData}
+      open={open}
+      onOpenChange={setOpen}
+      trigger={
+        <Button variant="link" size="none" className="text-sm tabular-nums truncate min-w-0 font-700">
+          {issueKey}
+        </Button>
+      }
+    />
+  ) : (
+    <Button variant="link" size="none" className="text-sm tabular-nums truncate min-w-0 font-700" disabled>
+      {issueKey}
+    </Button>
+  );
+
+  return (
+    <TimerControls
+      issueId={timer.issueId}
+      issueKey={issueKeyNode}
+      timestamps={timer.timestamps}
+      isRunning={timer.isRunning}
+      totalTimeMs={totalWorkTimeMs}
+      className="border bg-background/95 pl-2 pr-1 py-1"
+    />
+  );
+}
diff --git a/packages/frontend/src/components/issue-details.tsx b/packages/frontend/src/components/issue-details.tsx
index 9f5236e..16b20eb 100644
--- a/packages/frontend/src/components/issue-details.tsx
+++ b/packages/frontend/src/components/issue-details.tsx
@@ -9,8 +9,8 @@ import SmallUserDisplay from "@/components/small-user-display";
 import { SprintSelect } from "@/components/sprint-select";
 import { StatusSelect } from "@/components/status-select";
 import StatusTag from "@/components/status-tag";
-import { TimerDisplay } from "@/components/timer-display";
-import { TimerModal } from "@/components/timer-modal";
+import { TimerControls } from "@/components/timer-controls";
+import { getWorkTimeMs } from "@/components/timer-display";
 import { TypeSelect } from "@/components/type-select";
 import { Button } from "@/components/ui/button";
 import { ConfirmDialog } from "@/components/ui/confirm-dialog";
@@ -19,7 +19,13 @@ import { IconButton } from "@/components/ui/icon-button";
 import { Input } from "@/components/ui/input";
 import { SelectTrigger } from "@/components/ui/select";
 import { Textarea } from "@/components/ui/textarea";
-import { useDeleteIssue, useSelectedOrganisation, useUpdateIssue } from "@/lib/query/hooks";
+import {
+  useDeleteIssue,
+  useInactiveTimers,
+  useSelectedOrganisation,
+  useTimerState,
+  useUpdateIssue,
+} from "@/lib/query/hooks";
 import { parseError } from "@/lib/server";
 import { cn, issueID } from "@/lib/utils";
 
@@ -55,6 +61,9 @@ export function IssueDetails({
   const organisation = useSelectedOrganisation();
   const updateIssue = useUpdateIssue();
   const deleteIssue = useDeleteIssue();
+  const { data: timerState } = useTimerState(issueData.Issue.id, { refetchInterval: 10000 });
+  const { data: inactiveTimers = [] } = useInactiveTimers(issueData.Issue.id, { refetchInterval: 10000 });
+  const [timerTick, setTimerTick] = useState(0);
 
   const [assigneeIds, setAssigneeIds] = useState<string[]>([]);
   const [sprintId, setSprintId] = useState<string>("unassigned");
@@ -95,6 +104,16 @@ export function IssueDetails({
     setIsEditingDescription(false);
   }, [issueData]);
 
+  useEffect(() => {
+    if (!timerState?.isRunning) return;
+
+    const interval = window.setInterval(() => {
+      setTimerTick((value) => value + 1);
+    }, 1000);
+
+    return () => window.clearInterval(interval);
+  }, [timerState?.isRunning]);
+
   useEffect(() => {
     return () => {
       if (copyTimeoutRef.current) {
@@ -103,6 +122,15 @@ export function IssueDetails({
     };
   }, []);
 
+  void timerTick;
+
+  const inactiveWorkTimeMs = inactiveTimers.reduce(
+    (total, session) => total + getWorkTimeMs(session?.timestamps),
+    0,
+  );
+  const currentWorkTimeMs = getWorkTimeMs(timerState?.timestamps);
+  const totalWorkTimeMs = inactiveWorkTimeMs + currentWorkTimeMs;
+
   const handleSprintChange = async (value: string) => {
     setSprintId(value);
     const newSprintId = value === "unassigned" ? null : Number(value);
@@ -486,10 +514,17 @@ export function IssueDetails({
 
         {organisation?.Organisation.features.issueTimeTracking && isAssignee && (
           <div className={cn("flex flex-col gap-2", hasMultipleAssignees && "cursor-not-allowed")}>
-            <div className="flex items-center gap-2">
-              <TimerModal issueId={issueData.Issue.id} disabled={hasMultipleAssignees} />
-              <TimerDisplay issueId={issueData.Issue.id} />
-            </div>
+            <TimerControls
+              issueId={issueData.Issue.id}
+              // biome-ignore lint/complexity/noUselessFragments: <needed to represent absence>
+              issueKey={<></>}
+              timestamps={timerState?.timestamps}
+              isRunning={timerState?.isRunning}
+              totalTimeMs={totalWorkTimeMs}
+              disabled={hasMultipleAssignees}
+              size="sm"
+              className="self-start w-fit border bg-background/95 pl-0 pr-1 py-1"
+            />
             {hasMultipleAssignees && (
               <span className="text-xs text-destructive/85 font-600">
                 Timers cannot be used on issues with multiple assignees
diff --git a/packages/frontend/src/components/timer-controls.tsx b/packages/frontend/src/components/timer-controls.tsx
new file mode 100644
index 0000000..d783dcc
--- /dev/null
+++ b/packages/frontend/src/components/timer-controls.tsx
@@ -0,0 +1,105 @@
+import type { ReactNode } from "react";
+import { useState } from "react";
+import { getWorkTimeMs } from "@/components/timer-display";
+import Icon from "@/components/ui/icon";
+import { IconButton } from "@/components/ui/icon-button";
+import { useEndTimer, useToggleTimer } from "@/lib/query/hooks";
+import { parseError } from "@/lib/server";
+import { cn, formatTime } from "@/lib/utils";
+
+export function TimerControls({
+  issueId,
+  issueKey,
+  timestamps,
+  isRunning,
+  totalTimeMs,
+  disabled = false,
+  size = "md",
+  className,
+}: {
+  issueId: number;
+  issueKey: ReactNode;
+  timestamps?: string[] | null;
+  isRunning?: boolean;
+  totalTimeMs?: number;
+  disabled?: boolean;
+  size?: "sm" | "md";
+  className?: string;
+}) {
+  const toggleTimer = useToggleTimer();
+  const endTimer = useEndTimer();
+  const [error, setError] = useState<string | null>(null);
+
+  const elapsedMs = getWorkTimeMs(timestamps ?? undefined);
+  const resolvedTotalMs = totalTimeMs ?? elapsedMs;
+  const running = Boolean(isRunning);
+  const hasTimer = (timestamps?.length ?? 0) > 0;
+
+  const handleToggle = async () => {
+    if (disabled) return;
+    try {
+      await toggleTimer.mutateAsync({ issueId });
+      setError(null);
+    } catch (err) {
+      setError(parseError(err as Error));
+    }
+  };
+
+  const handleEnd = async () => {
+    if (disabled) return;
+    try {
+      await endTimer.mutateAsync({ issueId });
+      setError(null);
+    } catch (err) {
+      setError(parseError(err as Error));
+    }
+  };
+
+  const isCompact = size === "sm";
+
+  return (
+    <div className={cn("flex flex-col gap-1", className)}>
+      <div className={cn("flex items-center", isCompact ? "gap-2" : "gap-3")}>
+        <div className="min-w-0 flex items-center">{issueKey}</div>
+        <span className={cn("font-mono tabular-nums leading-none", isCompact ? "text-xs" : "text-sm")}>
+          {formatTime(elapsedMs)}
+        </span>
+        <span
+          className={cn(
+            "font-mono tabular-nums leading-none text-muted-foreground",
+            isCompact ? "text-[11.5px] font-300" : "text-xs font-300",
+          )}
+        >
+          ({formatTime(resolvedTotalMs)})
+        </span>
+        <div className={cn("ml-auto flex items-center", isCompact ? "gap-1" : "gap-2")}>
+          <IconButton
+            size={"sm"}
+            variant="dummy"
+            aria-label={running ? "Pause timer" : "Resume timer"}
+            disabled={disabled}
+            onClick={handleToggle}
+            className={"hover:opacity-70"}
+          >
+            {running ? (
+              <Icon icon="pause" size={isCompact ? 14 : 16} />
+            ) : (
+              <Icon icon="play" size={isCompact ? 14 : 16} />
+            )}
+          </IconButton>
+          <IconButton
+            size={"sm"}
+            variant="destructive"
+            aria-label="End timer"
+            disabled={disabled || !hasTimer}
+            onClick={handleEnd}
+            className={"hover:opacity-70"}
+          >
+            <Icon icon="stop" size={isCompact ? 14 : 16} color={"var(--destructive)"} />
+          </IconButton>
+        </div>
+      </div>
+      {error && <span className="mt-1 block text-xs text-destructive">{error}</span>}
+    </div>
+  );
+}
diff --git a/packages/frontend/src/components/ui/icon-button.tsx b/packages/frontend/src/components/ui/icon-button.tsx
index 1f0aadc..a5add3c 100644
--- a/packages/frontend/src/components/ui/icon-button.tsx
+++ b/packages/frontend/src/components/ui/icon-button.tsx
@@ -15,6 +15,7 @@ const iconButtonVariants = cva(
         outline: "border bg-transparent dark:hover:bg-muted/40",
         secondary: "bg-secondary text-secondary-foreground hover:bg-secondary/80",
         primary: "bg-primary text-primary-foreground hover:bg-primary/90",
+        dummy: "",
       },
       size: {
         default: "w-6 h-6",
diff --git a/packages/frontend/src/components/ui/icon.tsx b/packages/frontend/src/components/ui/icon.tsx
index 098a9b8..a374aad 100644
--- a/packages/frontend/src/components/ui/icon.tsx
+++ b/packages/frontend/src/components/ui/icon.tsx
@@ -19,8 +19,11 @@ import {
   Moon as PixelMoon,
   MoreVertical as PixelMoreVertical,
   NoteDelete as PixelNoteDelete,
+  Pause as PixelPause,
+  Play as PixelPlay,
   Plus as PixelPlus,
   Server as PixelServer,
+  CheckboxOn as PixelStop,
   Sun as PixelSun,
   Trash as PixelTrash,
   Undo as PixelUndo,
@@ -50,9 +53,12 @@ import {
   SignOutIcon as PhosphorLogOut,
   MoonIcon as PhosphorMoon,
   OctagonIcon as PhosphorOctagon,
+  PauseIcon as PhosphorPause,
+  PlayIcon as PhosphorPlay,
   PlusIcon as PhosphorPlus,
   QuestionIcon as PhosphorQuestion,
   HardDrivesIcon as PhosphorServer,
+  StopIcon as PhosphorStop,
   SunIcon as PhosphorSun,
   TrashIcon as PhosphorTrash,
   ArrowCounterClockwiseIcon as PhosphorUndo,
@@ -87,8 +93,11 @@ import {
   Home as LucideHome,
   Moon,
   OctagonXIcon,
+  Pause,
+  Play,
   Plus,
   ServerIcon,
+  Square,
   SquareCheck,
   Sun,
   Timer,
@@ -103,6 +112,7 @@ import { useSessionSafe } from "@/components/session-provider";
 
 // lucide: https://lucide.dev/icons
 // pixel: https://pixelarticons.com/ (CLICK "Legacy") - these ones are free
+// phosphor: https://phosphoricons.com/
 const icons = {
   alertTriangle: { lucide: AlertTriangle, pixel: PixelAlert, phosphor: PhosphorWarning },
   bug: { lucide: Bug, pixel: PixelDebug, phosphor: PhosphorBug },
@@ -138,9 +148,12 @@ const icons = {
   logOut: { lucide: LogOut, pixel: PixelLogout, phosphor: PhosphorLogOut },
   moon: { lucide: Moon, pixel: PixelMoon, phosphor: PhosphorMoon },
   octagonXIcon: { lucide: OctagonXIcon, pixel: PixelClose, phosphor: PhosphorOctagon },
+  pause: { lucide: Pause, pixel: PixelPause, phosphor: PhosphorPause },
+  play: { lucide: Play, pixel: PixelPlay, phosphor: PhosphorPlay },
   plus: { lucide: Plus, pixel: PixelPlus, phosphor: PhosphorPlus },
   serverIcon: { lucide: ServerIcon, pixel: PixelServer, phosphor: PhosphorServer },
   sun: { lucide: Sun, pixel: PixelSun, phosphor: PhosphorSun },
+  stop: { lucide: Square, pixel: PixelStop, phosphor: PhosphorStop },
   timer: { lucide: Timer, pixel: PixelClock, phosphor: PhosphorClock },
   trash: { lucide: Trash, pixel: PixelTrash, phosphor: PhosphorTrash },
   triangleAlertIcon: { lucide: TriangleAlertIcon, pixel: PixelAlert, phosphor: PhosphorWarning },
diff --git a/packages/frontend/src/lib/query/hooks/issues.ts b/packages/frontend/src/lib/query/hooks/issues.ts
index 006f1d0..c4600fd 100644
--- a/packages/frontend/src/lib/query/hooks/issues.ts
+++ b/packages/frontend/src/lib/query/hooks/issues.ts
@@ -1,4 +1,5 @@
 import type {
+  IssueByIdQuery,
   IssueCreateRequest,
   IssueRecord,
   IssueResponse,
@@ -21,6 +22,14 @@ export function useIssues(projectId?: number | null) {
   });
 }
 
+export function useIssueById(issueId?: IssueByIdQuery["issueId"] | null) {
+  return useQuery<IssueResponse>({
+    queryKey: queryKeys.issues.byId(issueId ?? 0),
+    queryFn: () => issue.byId(issueId ?? 0),
+    enabled: Boolean(issueId),
+  });
+}
+
 export function useIssueStatusCount(organisationId?: number | null, status?: string | null) {
   return useQuery<StatusCountResponse>({
     queryKey: queryKeys.issues.statusCount(organisationId ?? 0, status ?? ""),
diff --git a/packages/frontend/src/lib/query/hooks/timers.ts b/packages/frontend/src/lib/query/hooks/timers.ts
index bf7d6c5..97bc6fe 100644
--- a/packages/frontend/src/lib/query/hooks/timers.ts
+++ b/packages/frontend/src/lib/query/hooks/timers.ts
@@ -1,15 +1,28 @@
-import type { TimerEndRequest, TimerState, TimerToggleRequest } from "@sprint/shared";
+import type { TimerEndRequest, TimerListItem, TimerState, TimerToggleRequest } from "@sprint/shared";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { queryKeys } from "@/lib/query/keys";
 import { timer } from "@/lib/server";
 
+const activeTimersQueryFn = () => timer.list({ activeOnly: true });
+
+export function useActiveTimers(options?: { refetchInterval?: number; enabled?: boolean }) {
+  return useQuery<TimerListItem[]>({
+    queryKey: queryKeys.timers.list(),
+    queryFn: activeTimersQueryFn,
+    enabled: options?.enabled ?? true,
+    refetchInterval: options?.refetchInterval,
+    refetchIntervalInBackground: false,
+  });
+}
+
 export function useTimerState(issueId?: number | null, options?: { refetchInterval?: number }) {
-  return useQuery<TimerState>({
-    queryKey: queryKeys.timers.active(issueId ?? 0),
-    queryFn: () => timer.get(issueId ?? 0),
+  return useQuery<TimerListItem[], Error, TimerState>({
+    queryKey: queryKeys.timers.list(),
+    queryFn: activeTimersQueryFn,
     enabled: Boolean(issueId),
     refetchInterval: options?.refetchInterval,
     refetchIntervalInBackground: false,
+    select: (timers) => timers.find((timer) => timer.issueId === issueId) ?? null,
   });
 }
 
@@ -29,9 +42,9 @@ export function useToggleTimer() {
   return useMutation<TimerState, Error, TimerToggleRequest>({
     mutationKey: ["timers", "toggle"],
     mutationFn: timer.toggle,
-    onSuccess: (data, variables) => {
-      queryClient.setQueryData(queryKeys.timers.active(variables.issueId), data);
+    onSuccess: (_data, variables) => {
       queryClient.invalidateQueries({ queryKey: queryKeys.timers.inactive(variables.issueId) });
+      queryClient.invalidateQueries({ queryKey: queryKeys.timers.list() });
     },
   });
 }
@@ -42,9 +55,9 @@ export function useEndTimer() {
   return useMutation<TimerState, Error, TimerEndRequest>({
     mutationKey: ["timers", "end"],
     mutationFn: timer.end,
-    onSuccess: (data, variables) => {
-      queryClient.setQueryData(queryKeys.timers.active(variables.issueId), data);
+    onSuccess: (_data, variables) => {
       queryClient.invalidateQueries({ queryKey: queryKeys.timers.inactive(variables.issueId) });
+      queryClient.invalidateQueries({ queryKey: queryKeys.timers.list() });
     },
   });
 }
diff --git a/packages/frontend/src/lib/query/keys.ts b/packages/frontend/src/lib/query/keys.ts
index dff3534..67c3260 100644
--- a/packages/frontend/src/lib/query/keys.ts
+++ b/packages/frontend/src/lib/query/keys.ts
@@ -13,6 +13,7 @@ export const queryKeys = {
   issues: {
     all: ["issues"] as const,
     byProject: (projectId: number) => [...queryKeys.issues.all, "by-project", projectId] as const,
+    byId: (issueId: number) => [...queryKeys.issues.all, "by-id", issueId] as const,
     statusCount: (organisationId: number, status: string) =>
       [...queryKeys.issues.all, "status-count", organisationId, status] as const,
     typeCount: (organisationId: number, type: string) =>
@@ -30,7 +31,7 @@ export const queryKeys = {
     all: ["timers"] as const,
     active: (issueId: number) => [...queryKeys.timers.all, "active", issueId] as const,
     inactive: (issueId: number) => [...queryKeys.timers.all, "inactive", issueId] as const,
-    list: (issueId: number) => [...queryKeys.timers.all, "list", issueId] as const,
+    list: () => [...queryKeys.timers.all, "list"] as const,
   },
   users: {
     all: ["users"] as const,
diff --git a/packages/frontend/src/lib/server/issue/byId.ts b/packages/frontend/src/lib/server/issue/byId.ts
new file mode 100644
index 0000000..5679891
--- /dev/null
+++ b/packages/frontend/src/lib/server/issue/byId.ts
@@ -0,0 +1,19 @@
+import type { IssueByIdQuery, IssueResponse } from "@sprint/shared";
+import { getServerURL } from "@/lib/utils";
+import { getErrorMessage } from "..";
+
+export async function byId(issueId: IssueByIdQuery["issueId"]): Promise<IssueResponse> {
+  const url = new URL(`${getServerURL()}/issue/by-id`);
+  url.searchParams.set("issueId", `${issueId}`);
+
+  const res = await fetch(url.toString(), {
+    credentials: "include",
+  });
+
+  if (!res.ok) {
+    const message = await getErrorMessage(res, `failed to get issue (${res.status})`);
+    throw new Error(message);
+  }
+
+  return res.json();
+}
diff --git a/packages/frontend/src/lib/server/issue/index.ts b/packages/frontend/src/lib/server/issue/index.ts
index a267e19..12bcec5 100644
--- a/packages/frontend/src/lib/server/issue/index.ts
+++ b/packages/frontend/src/lib/server/issue/index.ts
@@ -1,3 +1,4 @@
+export { byId } from "@/lib/server/issue/byId";
 export { byProject } from "@/lib/server/issue/byProject";
 export { create } from "@/lib/server/issue/create";
 export { remove as delete } from "@/lib/server/issue/delete";
diff --git a/packages/frontend/src/lib/server/timer/list.ts b/packages/frontend/src/lib/server/timer/list.ts
index 19a8461..79dcaa3 100644
--- a/packages/frontend/src/lib/server/timer/list.ts
+++ b/packages/frontend/src/lib/server/timer/list.ts
@@ -1,15 +1,18 @@
+import type { TimerListItem } from "@sprint/shared";
 import { getCsrfToken, getServerURL } from "@/lib/utils";
 import { getErrorMessage } from "..";
 
 type TimerListInput = {
   limit?: number;
   offset?: number;
+  activeOnly?: boolean;
 };
 
-export async function list(input: TimerListInput = {}): Promise<unknown> {
+export async function list(input: TimerListInput = {}): Promise<TimerListItem[]> {
   const url = new URL(`${getServerURL()}/timers`);
   if (input.limit != null) url.searchParams.set("limit", `${input.limit}`);
   if (input.offset != null) url.searchParams.set("offset", `${input.offset}`);
+  if (input.activeOnly != null) url.searchParams.set("activeOnly", input.activeOnly ? "true" : "false");
 
   const csrfToken = getCsrfToken();
   const headers: HeadersInit = {};
diff --git a/packages/frontend/src/main.tsx b/packages/frontend/src/main.tsx
index ca29436..7a2d4be 100644
--- a/packages/frontend/src/main.tsx
+++ b/packages/frontend/src/main.tsx
@@ -2,6 +2,7 @@ import "./App.css";
 import React from "react";
 import ReactDOM from "react-dom/client";
 import { BrowserRouter, Route, Routes } from "react-router-dom";
+import { ActiveTimersOverlay } from "@/components/active-timers-overlay";
 import { QueryProvider } from "@/components/query-provider";
 import { SelectionProvider } from "@/components/selection-provider";
 import { RequireAuth, SessionProvider } from "@/components/session-provider";
@@ -57,6 +58,7 @@ ReactDOM.createRoot(document.getElementById("root") as HTMLElement).render(
                 <Route path="*" element={<NotFound />} />
               </Routes>
             </BrowserRouter>
+            <ActiveTimersOverlay />
             <Toaster visibleToasts={1} duration={2000} />
           </SelectionProvider>
         </SessionProvider>
diff --git a/packages/shared/src/api-schemas.ts b/packages/shared/src/api-schemas.ts
index 14eacdd..e8d8b64 100644
--- a/packages/shared/src/api-schemas.ts
+++ b/packages/shared/src/api-schemas.ts
@@ -101,6 +101,12 @@ export const IssuesByProjectQuerySchema = z.object({
 
 export type IssuesByProjectQuery = z.infer<typeof IssuesByProjectQuerySchema>;
 
+export const IssueByIdQuerySchema = z.object({
+    issueId: z.coerce.number().int().positive("issueId must be a positive integer"),
+});
+
+export type IssueByIdQuery = z.infer<typeof IssueByIdQuerySchema>;
+
 export const IssuesStatusCountQuerySchema = z.object({
     organisationId: z.coerce.number().int().positive("organisationId must be a positive integer"),
     status: z.string().min(1, "Status is required").max(ISSUE_STATUS_MAX_LENGTH),
@@ -512,6 +518,24 @@ export const TimerStateSchema = z
 
 export type TimerStateType = z.infer<typeof TimerStateSchema>;
 
+export const TimerListItemSchema = z.object({
+    id: z.number(),
+    issueId: z.number(),
+    issueNumber: z.number(),
+    projectKey: z.string(),
+    workTimeMs: z.number(),
+    breakTimeMs: z.number(),
+    isRunning: z.boolean(),
+    timestamps: z.array(z.string()),
+    endedAt: z.string().nullable(),
+});
+
+export type TimerListItem = z.infer<typeof TimerListItemSchema>;
+
+export const TimerListResponseSchema = z.array(TimerListItemSchema);
+
+export type TimerListResponse = z.infer<typeof TimerListResponseSchema>;
+
 export const StatusCountResponseSchema = z.array(
     z.object({
         status: z.string(),
diff --git a/packages/shared/src/index.ts b/packages/shared/src/index.ts
index f3cc78c..cface76 100644
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -1,6 +1,7 @@
 export type {
     ApiError,
     AuthResponse,
+    IssueByIdQuery,
     IssueCommentCreateRequest,
     IssueCommentDeleteRequest,
     IssueCommentResponseType,
@@ -43,6 +44,8 @@ export type {
     SuccessResponse,
     TimerEndRequest,
     TimerGetQuery,
+    TimerListItem,
+    TimerListResponse,
     TimerStateType,
     TimerToggleRequest,
     TypeCountResponse,
@@ -54,6 +57,7 @@ export type {
 export {
     ApiErrorSchema,
     AuthResponseSchema,
+    IssueByIdQuerySchema,
     IssueCommentCreateRequestSchema,
     IssueCommentDeleteRequestSchema,
     IssueCommentRecordSchema,
@@ -101,6 +105,8 @@ export {
     SuccessResponseSchema,
     TimerEndRequestSchema,
     TimerGetQuerySchema,
+    TimerListItemSchema,
+    TimerListResponseSchema,
     TimerStateSchema,
     TimerToggleRequestSchema,
     TypeCountResponseSchema,