diff --git a/worklenz-frontend/public/locales/alb/common.json b/worklenz-frontend/public/locales/alb/common.json
index 5af25f69..8b005314 100644
--- a/worklenz-frontend/public/locales/alb/common.json
+++ b/worklenz-frontend/public/locales/alb/common.json
@@ -5,5 +5,6 @@
   "signup-failed": "Regjistrimi dështoi. Ju lutemi sigurohuni që të gjitha fushat e nevojshme janë plotësuar dhe provoni përsëri.",
   "reconnecting": "Jeni shkëputur nga serveri.",
   "connection-lost": "Lidhja me serverin dështoi. Ju lutemi kontrolloni lidhjen tuaj me internet.",
-  "connection-restored": "U lidhët me serverin me sukses"
+  "connection-restored": "U lidhët me serverin me sukses",
+  "cancel": "Anulo"
 }
diff --git a/worklenz-frontend/public/locales/alb/task-list-table.json b/worklenz-frontend/public/locales/alb/task-list-table.json
index bf2542cf..5d7756eb 100644
--- a/worklenz-frontend/public/locales/alb/task-list-table.json
+++ b/worklenz-frontend/public/locales/alb/task-list-table.json
@@ -136,5 +136,11 @@
       "dependencies": "Detyra ka varësi",
       "recurring": "Detyrë përsëritëse"
     }
+  },
+
+  "timer": {
+    "conflictTitle": "Kronómetr Tashë Në Ecuri",
+    "conflictMessage": "Ju keni një kronómetr në ecuri për \"{{taskName}}\" në projektin \"{{projectName}}\". Dëshironi ta ndaloni atë kronómetr dhe të filloni një të ri për këtë detyrë?",
+    "stopAndStart": "Ndalo & Fillo Kronómetr të Ri"
   }
 }
diff --git a/worklenz-frontend/public/locales/de/common.json b/worklenz-frontend/public/locales/de/common.json
index 937ad4a9..10ad2bc1 100644
--- a/worklenz-frontend/public/locales/de/common.json
+++ b/worklenz-frontend/public/locales/de/common.json
@@ -5,5 +5,6 @@
   "signup-failed": "Registrierung fehlgeschlagen. Bitte füllen Sie alle erforderlichen Felder aus und versuchen Sie es erneut.",
   "reconnecting": "Vom Server getrennt.",
   "connection-lost": "Verbindung zum Server fehlgeschlagen. Bitte überprüfen Sie Ihre Internetverbindung.",
-  "connection-restored": "Erfolgreich mit dem Server verbunden"
+  "connection-restored": "Erfolgreich mit dem Server verbunden",
+  "cancel": "Abbrechen"
 }
diff --git a/worklenz-frontend/public/locales/de/task-list-table.json b/worklenz-frontend/public/locales/de/task-list-table.json
index 21353b54..4adfd5f7 100644
--- a/worklenz-frontend/public/locales/de/task-list-table.json
+++ b/worklenz-frontend/public/locales/de/task-list-table.json
@@ -136,5 +136,11 @@
       "dependencies": "Aufgabe hat Abhängigkeiten",
       "recurring": "Wiederkehrende Aufgabe"
     }
+  },
+
+  "timer": {
+    "conflictTitle": "Timer läuft bereits",
+    "conflictMessage": "Sie haben einen Timer für \"{{taskName}}\" im Projekt \"{{projectName}}\" laufen. Möchten Sie diesen Timer stoppen und einen neuen für diese Aufgabe starten?",
+    "stopAndStart": "Stoppen & Neuen Timer starten"
   }
 }
diff --git a/worklenz-frontend/public/locales/en/common.json b/worklenz-frontend/public/locales/en/common.json
index 815560be..641bd765 100644
--- a/worklenz-frontend/public/locales/en/common.json
+++ b/worklenz-frontend/public/locales/en/common.json
@@ -5,5 +5,6 @@
   "signup-failed": "Signup failed. Please ensure all required fields are filled and try again.",
   "reconnecting": "Disconnected from server.",
   "connection-lost": "Failed to connect to server. Please check your internet connection.",
-  "connection-restored": "Connected to server successfully"
+  "connection-restored": "Connected to server successfully",
+  "cancel": "Cancel"
 }
diff --git a/worklenz-frontend/public/locales/en/task-list-table.json b/worklenz-frontend/public/locales/en/task-list-table.json
index 6d05d6b9..f20fdadc 100644
--- a/worklenz-frontend/public/locales/en/task-list-table.json
+++ b/worklenz-frontend/public/locales/en/task-list-table.json
@@ -136,5 +136,11 @@
       "dependencies": "Task has dependencies",
       "recurring": "Recurring task"
     }
+  },
+
+  "timer": {
+    "conflictTitle": "Timer Already Running",
+    "conflictMessage": "You have a timer running for \"{{taskName}}\" in project \"{{projectName}}\". Would you like to stop that timer and start a new one for this task?",
+    "stopAndStart": "Stop & Start New Timer"
   }
 }
diff --git a/worklenz-frontend/public/locales/es/common.json b/worklenz-frontend/public/locales/es/common.json
index 583e8670..2f04e775 100644
--- a/worklenz-frontend/public/locales/es/common.json
+++ b/worklenz-frontend/public/locales/es/common.json
@@ -5,5 +5,6 @@
   "signup-failed": "Error al registrarse. Por favor asegúrate de llenar todos los campos requeridos e intenta nuevamente.",
   "reconnecting": "Reconectando al servidor...",
   "connection-lost": "Conexión perdida. Intentando reconectarse...",
-  "connection-restored": "Conexión restaurada. Reconectando al servidor..."
+  "connection-restored": "Conexión restaurada. Reconectando al servidor...",
+  "cancel": "Cancelar"
 }
diff --git a/worklenz-frontend/public/locales/es/task-list-table.json b/worklenz-frontend/public/locales/es/task-list-table.json
index 0ff70a2f..53d99bb8 100644
--- a/worklenz-frontend/public/locales/es/task-list-table.json
+++ b/worklenz-frontend/public/locales/es/task-list-table.json
@@ -136,5 +136,11 @@
       "dependencies": "La tarea tiene dependencias",
       "recurring": "Tarea recurrente"
     }
+  },
+
+  "timer": {
+    "conflictTitle": "Temporizador Ya En Ejecución",
+    "conflictMessage": "Tiene un temporizador ejecutándose para \"{{taskName}}\" en el proyecto \"{{projectName}}\". ¿Le gustaría detener ese temporizador e iniciar uno nuevo para esta tarea?",
+    "stopAndStart": "Detener e Iniciar Nuevo Temporizador"
   }
 }
diff --git a/worklenz-frontend/public/locales/pt/common.json b/worklenz-frontend/public/locales/pt/common.json
index ce540a28..0e192458 100644
--- a/worklenz-frontend/public/locales/pt/common.json
+++ b/worklenz-frontend/public/locales/pt/common.json
@@ -5,5 +5,6 @@
   "signup-failed": "Falha no cadastro. Por favor, certifique-se de que todos os campos obrigatórios estão preenchidos e tente novamente.",
   "reconnecting": "Reconectando ao servidor...",
   "connection-lost": "Conexão perdida. Tentando reconectar...",
-  "connection-restored": "Conexão restaurada. Reconectando ao servidor..."
+  "connection-restored": "Conexão restaurada. Reconectando ao servidor...",
+  "cancel": "Cancelar"
 }
diff --git a/worklenz-frontend/public/locales/pt/task-list-table.json b/worklenz-frontend/public/locales/pt/task-list-table.json
index 6726b32c..d519ec8f 100644
--- a/worklenz-frontend/public/locales/pt/task-list-table.json
+++ b/worklenz-frontend/public/locales/pt/task-list-table.json
@@ -136,5 +136,11 @@
       "dependencies": "A tarefa tem dependências",
       "recurring": "Tarefa recorrente"
     }
+  },
+
+  "timer": {
+    "conflictTitle": "Temporizador Já Em Execução",
+    "conflictMessage": "Você tem um temporizador executando para \"{{taskName}}\" no projeto \"{{projectName}}\". Gostaria de parar esse temporizador e iniciar um novo para esta tarefa?",
+    "stopAndStart": "Parar e Iniciar Novo Temporizador"
   }
 }
diff --git a/worklenz-frontend/public/locales/zh/common.json b/worklenz-frontend/public/locales/zh/common.json
index 520ee5e2..44821492 100644
--- a/worklenz-frontend/public/locales/zh/common.json
+++ b/worklenz-frontend/public/locales/zh/common.json
@@ -5,5 +5,6 @@
   "signup-failed": "注册失败。请确保填写所有必填字段并重试。",
   "reconnecting": "与服务器断开连接。",
   "connection-lost": "无法连接到服务器。请检查您的互联网连接。",
-  "connection-restored": "成功连接到服务器"
+  "connection-restored": "成功连接到服务器",
+  "cancel": "取消"
 }
\ No newline at end of file
diff --git a/worklenz-frontend/public/locales/zh/task-list-table.json b/worklenz-frontend/public/locales/zh/task-list-table.json
index 8d3dc9bb..e61fe403 100644
--- a/worklenz-frontend/public/locales/zh/task-list-table.json
+++ b/worklenz-frontend/public/locales/zh/task-list-table.json
@@ -129,5 +129,11 @@
       "dependencies": "任务有依赖项",
       "recurring": "重复任务"
     }
+  },
+
+  "timer": {
+    "conflictTitle": "计时器已在运行",
+    "conflictMessage": "您在项目\"{{projectName}}\"中的\"{{taskName}}\"任务正在运行计时器。您是否要停止该计时器并为此任务启动新的计时器？",
+    "stopAndStart": "停止并启动新计时器"
   }
 }
\ No newline at end of file
diff --git a/worklenz-frontend/src/components/task-drawer/shared/time-log/task-drawer-time-log.tsx b/worklenz-frontend/src/components/task-drawer/shared/time-log/task-drawer-time-log.tsx
index 61f245cf..c4ff27f9 100644
--- a/worklenz-frontend/src/components/task-drawer/shared/time-log/task-drawer-time-log.tsx
+++ b/worklenz-frontend/src/components/task-drawer/shared/time-log/task-drawer-time-log.tsx
@@ -12,7 +12,7 @@ import TimeLogList from './time-log-list';
 import { taskTimeLogsApiService } from '@/api/tasks/task-time-logs.api.service';
 import { ITaskLogViewModel } from '@/types/tasks/task-log-view.types';
 import TaskTimer from '@/components/taskListCommon/task-timer/task-timer';
-import { useTaskTimer } from '@/hooks/useTaskTimer';
+import { useTaskTimerWithConflictCheck } from '@/hooks/useTaskTimerWithConflictCheck';
 import logger from '@/utils/errorLogger';
 
 interface TaskDrawerTimeLogProps {
@@ -31,7 +31,7 @@ const TaskDrawerTimeLog = ({ t, refreshTrigger = 0 }: TaskDrawerTimeLogProps) =>
     state => state.taskDrawerReducer
   );
 
-  const { started, timeString, handleStartTimer, handleStopTimer } = useTaskTimer(
+  const { started, timeString, handleStartTimer, handleStopTimer } = useTaskTimerWithConflictCheck(
     selectedTaskId || '',
     taskFormViewModel?.task?.timer_start_time || null
   );
diff --git a/worklenz-frontend/src/components/task-list-v2/TaskTimeTracking.tsx b/worklenz-frontend/src/components/task-list-v2/TaskTimeTracking.tsx
index 3bb44f57..77094d67 100644
--- a/worklenz-frontend/src/components/task-list-v2/TaskTimeTracking.tsx
+++ b/worklenz-frontend/src/components/task-list-v2/TaskTimeTracking.tsx
@@ -1,6 +1,6 @@
 import React from 'react';
 import TaskTimer from '@/components/taskListCommon/task-timer/task-timer';
-import { useTaskTimer } from '@/hooks/useTaskTimer';
+import { useTaskTimerWithConflictCheck } from '@/hooks/useTaskTimerWithConflictCheck';
 
 interface TaskTimeTrackingProps {
   taskId: string;
@@ -8,7 +8,7 @@ interface TaskTimeTrackingProps {
 }
 
 const TaskTimeTracking: React.FC<TaskTimeTrackingProps> = React.memo(({ taskId, isDarkMode }) => {
-  const { started, timeString, handleStartTimer, handleStopTimer } = useTaskTimer(
+  const { started, timeString, handleStartTimer, handleStopTimer } = useTaskTimerWithConflictCheck(
     taskId,
     null // The hook will get the timer start time from Redux
   );
diff --git a/worklenz-frontend/src/features/navbar/navbar.tsx b/worklenz-frontend/src/features/navbar/navbar.tsx
index 1630c25e..ca0cd06c 100644
--- a/worklenz-frontend/src/features/navbar/navbar.tsx
+++ b/worklenz-frontend/src/features/navbar/navbar.tsx
@@ -153,8 +153,8 @@ const Navbar = () => {
                   <Flex align="center">
                     <SwitchTeamButton />
                     <NotificationButton />
-                    {/* <TimerButton /> */}
-                    <HelpButton />
+                    <TimerButton />
+                    {/* <HelpButton /> */}
                     <ProfileButton isOwnerOrAdmin={isOwnerOrAdmin} />
                   </Flex>
                 </Flex>
diff --git a/worklenz-frontend/src/features/navbar/timers/timer-button.tsx b/worklenz-frontend/src/features/navbar/timers/timer-button.tsx
index 2735c34a..3a4ea12b 100644
--- a/worklenz-frontend/src/features/navbar/timers/timer-button.tsx
+++ b/worklenz-frontend/src/features/navbar/timers/timer-button.tsx
@@ -7,7 +7,7 @@ import { useAppDispatch } from '@/hooks/useAppDispatch';
 import { useSocket } from '@/socket/socketContext';
 import { SocketEvents } from '@/shared/socket-events';
 import { updateTaskTimeTracking } from '@/features/tasks/tasks.slice';
-import moment from 'moment';
+import { format, differenceInSeconds, isValid, parseISO } from 'date-fns';
 
 const { Text } = Typography;
 const { useToken } = theme;
@@ -60,17 +60,17 @@ const TimerButton = () => {
         try {
           if (!timer || !timer.task_id || !timer.start_time) return;
 
-          const startTime = moment(timer.start_time);
-          if (!startTime.isValid()) {
+          const startTime = parseISO(timer.start_time);
+          if (!isValid(startTime)) {
             logError(`Invalid start time for timer ${timer.task_id}: ${timer.start_time}`);
             return;
           }
 
-          const now = moment();
-          const duration = moment.duration(now.diff(startTime));
-          const hours = Math.floor(duration.asHours());
-          const minutes = duration.minutes();
-          const seconds = duration.seconds();
+          const now = new Date();
+          const totalSeconds = differenceInSeconds(now, startTime);
+          const hours = Math.floor(totalSeconds / 3600);
+          const minutes = Math.floor((totalSeconds % 3600) / 60);
+          const seconds = totalSeconds % 60;
           newTimes[timer.task_id] =
             `${hours.toString().padStart(2, '0')}:${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
         } catch (error) {
@@ -86,12 +86,7 @@ const TimerButton = () => {
   useEffect(() => {
     fetchRunningTimers();
 
-    // Set up polling to refresh timers every 30 seconds
-    const pollInterval = setInterval(() => {
-      fetchRunningTimers();
-    }, 30000);
-
-    return () => clearInterval(pollInterval);
+    // Removed periodic polling - rely on socket events for real-time updates
   }, [fetchRunningTimers]);
 
   useEffect(() => {
@@ -273,7 +268,7 @@ const TimerButton = () => {
                               <Text type="secondary" style={{ fontSize: 11 }}>
                                 Started:{' '}
                                 {timer.start_time
-                                  ? moment(timer.start_time).format('HH:mm')
+                                  ? format(parseISO(timer.start_time), 'HH:mm')
                                   : '--:--'}
                               </Text>
                               <Text
diff --git a/worklenz-frontend/src/hooks/useTaskTimerWithConflictCheck.ts b/worklenz-frontend/src/hooks/useTaskTimerWithConflictCheck.ts
new file mode 100644
index 00000000..5939779d
--- /dev/null
+++ b/worklenz-frontend/src/hooks/useTaskTimerWithConflictCheck.ts
@@ -0,0 +1,94 @@
+import { useState, useEffect, useCallback } from 'react';
+import { Modal } from 'antd';
+import { useTranslation } from 'react-i18next';
+import { useSocket } from '@/socket/socketContext';
+import { SocketEvents } from '@/shared/socket-events';
+import { taskTimeLogsApiService } from '@/api/tasks/task-time-logs.api.service';
+import { useTaskTimer } from './useTaskTimer';
+
+interface ConflictingTimer {
+  task_id: string;
+  task_name: string;
+  project_name: string;
+}
+
+export const useTaskTimerWithConflictCheck = (taskId: string, timerStartTime: string | null) => {
+  const { socket } = useSocket();
+  const { t: tTable } = useTranslation('task-list-table');
+  const { t: tCommon } = useTranslation('common');
+
+  // Ensure timerStartTime is a number or null, as required by useTaskTimer
+  const parsedTimerStartTime = typeof timerStartTime === 'string' && timerStartTime !== null
+    ? Number(timerStartTime)
+    : timerStartTime;
+
+  const originalHook = useTaskTimer(taskId, parsedTimerStartTime as number | null);
+  const [isCheckingConflict, setIsCheckingConflict] = useState(false);
+
+  const checkForConflictingTimers = useCallback(async () => {
+    try {
+      const response = await taskTimeLogsApiService.getRunningTimers();
+      const runningTimers = response.body || [];
+      
+      // Find conflicting timer (running timer for a different task)
+      const conflictingTimer = runningTimers.find((timer: ConflictingTimer) => 
+        timer.task_id !== taskId
+      );
+      
+      return conflictingTimer;
+    } catch (error) {
+      console.error('Error checking for conflicting timers:', error);
+      return null;
+    }
+  }, [taskId]);
+
+  const handleStartTimerWithConflictCheck = useCallback(async () => {
+    if (isCheckingConflict) return;
+    
+    setIsCheckingConflict(true);
+    
+    try {
+      const conflictingTimer = await checkForConflictingTimers();
+      
+      if (conflictingTimer) {
+        Modal.confirm({
+          title: tTable('timer.conflictTitle'),
+          content: tTable('timer.conflictMessage', { 
+            taskName: conflictingTimer.task_name,
+            projectName: conflictingTimer.project_name 
+          }),
+          okText: tTable('timer.stopAndStart'),
+          cancelText: tCommon('cancel'),
+          onOk: () => {
+            // Stop the conflicting timer
+            if (socket) {
+              socket.emit(SocketEvents.TASK_TIMER_STOP.toString(), JSON.stringify({ 
+                task_id: conflictingTimer.task_id 
+              }));
+            }
+            
+            // Start the new timer after a short delay
+            setTimeout(() => {
+              originalHook.handleStartTimer();
+            }, 100);
+          },
+        });
+      } else {
+        // No conflict, start timer directly
+        originalHook.handleStartTimer();
+      }
+    } catch (error) {
+      console.error('Error handling timer start with conflict check:', error);
+      // Fallback to original behavior
+      originalHook.handleStartTimer();
+    } finally {
+      setIsCheckingConflict(false);
+    }
+  }, [isCheckingConflict, checkForConflictingTimers, tTable, tCommon, socket, originalHook]);
+
+  return {
+    ...originalHook,
+    handleStartTimer: handleStartTimerWithConflictCheck,
+    isCheckingConflict,
+  };
+};
\ No newline at end of file