diff --git a/backend/src/tasks/task-worker.ts b/backend/src/tasks/task-worker.ts
index a59b298d..260bcffe 100644
--- a/backend/src/tasks/task-worker.ts
+++ b/backend/src/tasks/task-worker.ts
@@ -2249,7 +2249,7 @@ export class TaskWorker {
 
       if (result.success) {
         // Layer 1: Verify DB completion was recorded
-        const dbVerified = await taskService.completeTask(task.id, { result: result.data });
+        const dbVerified = await taskService.completeTask(task.id, result);
         if (!dbVerified) {
           console.error(`[TaskWorker] ${this.friendlyName} task ${task.id} DB COMPLETION VERIFICATION FAILED`);
           await taskService.failTask(task.id, 'DB completion verification failed');
@@ -2313,7 +2313,7 @@ export class TaskWorker {
 
       if (result.success) {
         // Use WorkerSession completion but also verify with taskService
-        await WorkerSession.completeTask(task.id, this.workerId, { result: result.data });
+        await WorkerSession.completeTask(task.id, this.workerId, result);
 
         // Verify output exists for payload-creating tasks
         const outputVerification = await taskService.verifyTaskOutput(task);
diff --git a/cannaiq/src/pages/WorkersDashboard.tsx b/cannaiq/src/pages/WorkersDashboard.tsx
index 72315776..7a5ae358 100644
--- a/cannaiq/src/pages/WorkersDashboard.tsx
+++ b/cannaiq/src/pages/WorkersDashboard.tsx
@@ -587,7 +587,8 @@ function StepBadge({ worker }: { worker: Worker }) {
 }
 
 // Format seconds to human readable duration
-function formatSecondsToTime(seconds: number): string {
+function formatSecondsToTime(seconds: number | null | undefined): string {
+  if (seconds === null || seconds === undefined) return '-';
   if (seconds < 60) return `${seconds}s`;
   const mins = Math.floor(seconds / 60);
   const secs = seconds % 60;