diff --git a/frontend/pages/index.vue b/frontend/pages/index.vue
index 31a6a56..ab06f94 100644
--- a/frontend/pages/index.vue
+++ b/frontend/pages/index.vue
@@ -93,11 +93,22 @@ const isWeekPeriod = computed(() =>
     selectedPeriod.value === 'thisWeek' || selectedPeriod.value === 'lastWeek'
 )
 
-// ── Filtered data (client-side project filter) ──
+// ── Filtered data (client-side project + user filter) ──
+
+const effectiveUserId = computed(() => selectedUserId.value ?? auth.user?.id ?? null)
 
 const tasks = computed(() => {
-    if (!selectedProjectId.value) return allTasks.value
-    return allTasks.value.filter(t => t.project?.id === selectedProjectId.value)
+    let result = allTasks.value
+    if (selectedProjectId.value) {
+        result = result.filter(t => t.project?.id === selectedProjectId.value)
+    }
+    if (selectedUserId.value) {
+        result = result.filter(t =>
+            t.assignee?.id === selectedUserId.value
+            || t.collaborators?.some(c => c.id === selectedUserId.value),
+        )
+    }
+    return result
 })
 
 const timeEntries = computed(() => {
@@ -173,8 +184,8 @@ const totalHoursThisWeek = computed(() =>
 
 const myTasks = computed(() =>
     tasks.value.filter(t =>
-        t.assignee?.id === auth.user?.id
-        || t.collaborators?.some(c => c.id === auth.user?.id)
+        t.assignee?.id === effectiveUserId.value
+        || t.collaborators?.some(c => c.id === effectiveUserId.value),
     )
 )