diff --git a/src/forge/workflow/task_takeover/graph.py b/src/forge/workflow/task_takeover/graph.py
index 04862246..e0bdeb84 100644
--- a/src/forge/workflow/task_takeover/graph.py
+++ b/src/forge/workflow/task_takeover/graph.py
@@ -8,6 +8,8 @@
 
 from langgraph.graph import END, StateGraph
 
+from forge.integrations.jira.client import JiraClient
+from forge.models.workflow import ForgeLabel, JiraStatus
 from forge.workflow.gates.task_plan_approval import (
     route_task_plan_approval,
     task_plan_approval_gate,
@@ -209,7 +211,21 @@ def _route_human_review_task_takeover(state: TaskTakeoverState) -> str:
 
 
 async def complete_task_takeover(state: TaskTakeoverState) -> TaskTakeoverState:
-    """Mark Task Takeover workflow complete after PR merge."""
+    """Mark Task Takeover workflow complete after PR merge and transition Jira ticket."""
+    ticket_key = state["ticket_key"]
+    logger.info(f"Completing task takeover workflow for ticket: {ticket_key}")
+
+    jira = JiraClient()
+    try:
+        try:
+            await jira.transition_issue(ticket_key, JiraStatus.CLOSED.value)
+            await jira.set_workflow_label(ticket_key, ForgeLabel.TASK_REVIEW_APPROVED)
+            logger.info(f"Task {ticket_key} successfully transitioned to Closed/Done")
+        except Exception as e:
+            logger.warning(f"Failed to transition Jira status/label for {ticket_key}: {e}")
+    finally:
+        await jira.close()
+
     return update_state_timestamp(
         {
             **state,
diff --git a/tests/workflow/test_task_takeover_graph.py b/tests/workflow/test_task_takeover_graph.py
index a66711ac..b9f8371d 100644
--- a/tests/workflow/test_task_takeover_graph.py
+++ b/tests/workflow/test_task_takeover_graph.py
@@ -6,7 +6,7 @@
 import pytest
 from langgraph.graph import END, StateGraph
 
-from forge.models.workflow import ForgeLabel, TicketType
+from forge.models.workflow import ForgeLabel, JiraStatus, TicketType
 from forge.workflow.gates.task_plan_approval import route_task_plan_approval
 from forge.workflow.task_takeover.graph import (
     _route_after_answer,
@@ -241,13 +241,52 @@ def test_human_review_approved_routes_to_task_takeover_complete(self) -> None:
         assert _route_human_review_task_takeover(state) == "complete_task_takeover"
 
     @pytest.mark.asyncio
-    async def test_complete_task_takeover_marks_workflow_complete(self) -> None:
-        state = make_task_state(current_node="human_review_gate", is_paused=True)
+    @patch("forge.workflow.task_takeover.graph.JiraClient")
+    async def test_complete_task_takeover_marks_workflow_complete(
+        self, mock_jira_class: MagicMock
+    ) -> None:
+        mock_jira = MagicMock()
+        mock_jira.transition_issue = AsyncMock()
+        mock_jira.set_workflow_label = AsyncMock()
+        mock_jira.close = AsyncMock()
+        mock_jira_class.return_value = mock_jira
+
+        state = make_task_state(
+            ticket_key="TASK-123", current_node="human_review_gate", is_paused=True
+        )
+        result = await complete_task_takeover(state)
+        assert result["current_node"] == "complete"
+        assert result["is_paused"] is False
+        assert result["ci_fix_attempt"] == 0
+
+        mock_jira.transition_issue.assert_called_once_with("TASK-123", JiraStatus.CLOSED.value)
+        mock_jira.set_workflow_label.assert_called_once_with(
+            "TASK-123", ForgeLabel.TASK_REVIEW_APPROVED
+        )
+        mock_jira.close.assert_called_once()
+
+    @pytest.mark.asyncio
+    @patch("forge.workflow.task_takeover.graph.JiraClient")
+    async def test_complete_task_takeover_resilience_on_exception(
+        self, mock_jira_class: MagicMock
+    ) -> None:
+        mock_jira = MagicMock()
+        mock_jira.transition_issue = AsyncMock(side_effect=Exception("Jira is down"))
+        mock_jira.set_workflow_label = AsyncMock()
+        mock_jira.close = AsyncMock()
+        mock_jira_class.return_value = mock_jira
+
+        state = make_task_state(
+            ticket_key="TASK-123", current_node="human_review_gate", is_paused=True
+        )
         result = await complete_task_takeover(state)
         assert result["current_node"] == "complete"
         assert result["is_paused"] is False
         assert result["ci_fix_attempt"] == 0
 
+        mock_jira.transition_issue.assert_called_once_with("TASK-123", JiraStatus.CLOSED.value)
+        mock_jira.close.assert_called_once()
+
 
 class TestInteractiveGateBehavior:
     """Test interactive gate behavior for plan approvals, questions, and revision requests."""