diff --git a/src/components/tickets/ticket-summary-header.tsx b/src/components/tickets/ticket-summary-header.tsx
index 7801209..0eabe08 100644
--- a/src/components/tickets/ticket-summary-header.tsx
+++ b/src/components/tickets/ticket-summary-header.tsx
@@ -1,6 +1,6 @@
 "use client"
 
-import { useCallback, useEffect, useMemo, useState } from "react"
+import { useCallback, useEffect, useMemo, useRef, useState } from "react"
 import { format, formatDistanceToNow } from "date-fns"
 import { ptBR } from "date-fns/locale"
 import { IconClock, IconDownload, IconInfoCircle, IconPlayerPause, IconPlayerPlay } from "@tabler/icons-react"
@@ -387,6 +387,9 @@ export function TicketSummaryHeader({ ticket }: TicketHeaderProps) {
 
   const isPlaying = Boolean(workSummary?.activeSession)
   const [now, setNow] = useState(() => Date.now())
+  // Guarda um marcador local do início da sessão atual para evitar inflar tempo com
+  // timestamps defasados vindos da rede. Escolhemos o MAIOR entre (remoto, local).
+  const localStartAtRef = useRef<number>(0)
 
   useEffect(() => {
     if (!workSummary?.activeSession) return
@@ -394,7 +397,19 @@ export function TicketSummaryHeader({ ticket }: TicketHeaderProps) {
       setNow(Date.now())
     }, 1000)
     return () => clearInterval(interval)
-  }, [workSummary?.activeSession, workSummary?.activeSession?.id])
+  }, [workSummary?.activeSession?.id])
+
+  // Sempre que a sessão ativa (id) mudar, sincroniza o ponteiro local
+  useEffect(() => {
+    if (!workSummary?.activeSession) {
+      localStartAtRef.current = 0
+      return
+    }
+    const remoteStart = Number(workSummary.activeSession.startedAt) || 0
+    if (remoteStart > localStartAtRef.current) {
+      localStartAtRef.current = remoteStart
+    }
+  }, [workSummary?.activeSession?.id, workSummary?.activeSession?.startedAt])
 
   useEffect(() => {
     if (!pauseDialogOpen) {
@@ -404,7 +419,13 @@ export function TicketSummaryHeader({ ticket }: TicketHeaderProps) {
     }
   }, [pauseDialogOpen])
 
-  const currentSessionMs = workSummary?.activeSession ? Math.max(0, now - workSummary.activeSession.startedAt) : 0
+  const currentSessionMs = workSummary?.activeSession
+    ? (() => {
+        const remoteStart = Number(workSummary.activeSession.startedAt) || 0
+        const effectiveStart = Math.max(remoteStart, localStartAtRef.current || 0)
+        return Math.max(0, now - effectiveStart)
+      })()
+    : 0
   const totalWorkedMs = workSummary ? workSummary.totalWorkedMs + currentSessionMs : 0
   const internalWorkedMs = workSummary
     ? workSummary.internalWorkedMs + (workSummary.activeSession?.workType === "INTERNAL" ? currentSessionMs : 0)
@@ -432,6 +453,7 @@ export function TicketSummaryHeader({ ticket }: TicketHeaderProps) {
       }
       // Otimização local: garantir startedAt correto imediatamente
       const startedAtMs = typeof result?.startedAt === "number" ? result.startedAt : Date.now()
+      localStartAtRef.current = startedAtMs
       const sessionId = (result as { sessionId?: unknown })?.sessionId as Id<"ticketWorkSessions"> | undefined
       setWorkSummary((prev) => {
         const base: WorkSummarySnapshot = prev ?? {
@@ -477,6 +499,7 @@ export function TicketSummaryHeader({ ticket }: TicketHeaderProps) {
       setPauseDialogOpen(false)
       // Otimização local: aplicar duração retornada no total e limpar sessão ativa
       const delta = typeof (result as { durationMs?: unknown })?.durationMs === "number" ? (result as { durationMs?: number }).durationMs! : 0
+      localStartAtRef.current = 0
       setWorkSummary((prev) => {
         if (!prev) return prev
         const workType = prev.activeSession?.workType ?? "INTERNAL"