diff --git a/backend/app/models/time_entry.py b/backend/app/models/time_entry.py
index 0cee538..b08692b 100644
--- a/backend/app/models/time_entry.py
+++ b/backend/app/models/time_entry.py
@@ -36,7 +36,7 @@ class TimeEntry(Base):
     date: Mapped[date] = mapped_column(Date, nullable=False, index=True)
     start_time: Mapped[time] = mapped_column(Time(timezone=False), nullable=False)
     end_time: Mapped[time | None] = mapped_column(Time(timezone=False))
-    break_minutes: Mapped[int] = mapped_column(Integer, default=0)
+    break_minutes: Mapped[int] = mapped_column(Integer, nullable=False, default=0, server_default="0")
     break_start: Mapped[time | None] = mapped_column(Time(timezone=False))  # Aktive Pause tracken
     project_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True))
     note: Mapped[str | None] = mapped_column(Text)
diff --git a/backend/migrations/versions/0044_time_entries_break_minutes_default.py b/backend/migrations/versions/0044_time_entries_break_minutes_default.py
new file mode 100644
index 0000000..d8fdba8
--- /dev/null
+++ b/backend/migrations/versions/0044_time_entries_break_minutes_default.py
@@ -0,0 +1,25 @@
+"""time_entries.break_minutes: DB-Default ergänzen (Model-Sync)
+
+Revision ID: 0044
+Revises: 0043
+Create Date: 2026-08-27
+
+Model hatte nur Python-seitigen default=0, kein server_default (wie zuvor
+hours_payouts.status, siehe Commit 71e3e82). Column ist bereits NOT NULL,
+hier nur DEFAULT nachgezogen für Konsistenz mit dem Model.
+"""
+from alembic import op
+from sqlalchemy import text
+
+revision = "0044"
+down_revision = "0043"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.execute(text("ALTER TABLE time_entries ALTER COLUMN break_minutes SET DEFAULT 0"))
+
+
+def downgrade() -> None:
+    op.execute(text("ALTER TABLE time_entries ALTER COLUMN break_minutes DROP DEFAULT"))
diff --git a/backend/tests/test_retention.py b/backend/tests/test_retention.py
index e9b9a62..6d85451 100644
--- a/backend/tests/test_retention.py
+++ b/backend/tests/test_retention.py
@@ -21,7 +21,9 @@ async def retention_headers(client: AsyncClient):
     })
     assert resp.status_code == 201, resp.text
     data = resp.json()
-    return {"Authorization": f"Bearer {data['access_token']}"}, data["user"]["company_id"]
+    headers = {"Authorization": f"Bearer {data['access_token']}"}
+    me = await client.get("/api/v1/users/me", headers=headers)
+    return headers, me.json()["company_id"]
 
 
 @pytest.mark.asyncio(loop_scope="session")
@@ -35,20 +37,23 @@ async def test_purge_deletes_old_time_entries_respects_retention(
     old_date = date.today() - timedelta(days=11 * 365)  # älter als Default 10 Jahre
     recent_date = date.today() - timedelta(days=30)
 
+    await db_session.execute(text("SET LOCAL app.bypass_rls = 'on'"))
     await db_session.execute(text(
-        "INSERT INTO time_entries (id, user_id, date, start_time, end_time, status, source) "
-        "VALUES (gen_random_uuid(), :uid, :d, '08:00', '16:00', 'approved', 'web')"
+        "INSERT INTO time_entries (id, user_id, date, start_time, end_time, break_minutes, status, source) "
+        "VALUES (gen_random_uuid(), :uid, :d, '08:00', '16:00', 0, 'approved', 'web')"
     ), {"uid": user_id, "d": old_date})
     await db_session.execute(text(
-        "INSERT INTO time_entries (id, user_id, date, start_time, end_time, status, source) "
-        "VALUES (gen_random_uuid(), :uid, :d, '08:00', '16:00', 'approved', 'web')"
+        "INSERT INTO time_entries (id, user_id, date, start_time, end_time, break_minutes, status, source) "
+        "VALUES (gen_random_uuid(), :uid, :d, '08:00', '16:00', 0, 'approved', 'web')"
     ), {"uid": user_id, "d": recent_date})
     await db_session.commit()
 
+    await db_session.execute(text("SET LOCAL app.bypass_rls = 'on'"))
     result = await run_retention_purge(db_session, company_id=company_id)
     await db_session.commit()
     assert result["time_entries"] == 1
 
+    await db_session.execute(text("SET LOCAL app.bypass_rls = 'on'"))
     remaining = await db_session.execute(text(
         "SELECT date FROM time_entries WHERE user_id = :uid"
     ), {"uid": user_id})
@@ -70,12 +75,14 @@ async def test_purge_configurable_retention_years(
     user_id = me.json()["id"]
     three_years_ago = date.today() - timedelta(days=3 * 365)
 
+    await db_session.execute(text("SET LOCAL app.bypass_rls = 'on'"))
     await db_session.execute(text(
-        "INSERT INTO time_entries (id, user_id, date, start_time, end_time, status, source) "
-        "VALUES (gen_random_uuid(), :uid, :d, '08:00', '16:00', 'approved', 'web')"
+        "INSERT INTO time_entries (id, user_id, date, start_time, end_time, break_minutes, status, source) "
+        "VALUES (gen_random_uuid(), :uid, :d, '08:00', '16:00', 0, 'approved', 'web')"
     ), {"uid": user_id, "d": three_years_ago})
     await db_session.commit()
 
+    await db_session.execute(text("SET LOCAL app.bypass_rls = 'on'"))
     result = await run_retention_purge(db_session, company_id=company_id)
     await db_session.commit()
     assert result["time_entries"] >= 1
@@ -92,6 +99,7 @@ async def test_purge_expired_sessions_and_audit_logs_global(
     expired = datetime.now(timezone.utc) - timedelta(days=1)
     old_audit = datetime.now(timezone.utc) - timedelta(days=4 * 365)
 
+    await db_session.execute(text("SET LOCAL app.bypass_rls = 'on'"))
     await db_session.execute(text(
         "INSERT INTO sessions (id, user_id, refresh_token_hash, expires_at) "
         "VALUES (gen_random_uuid(), :uid, :h, :exp)"
@@ -102,6 +110,7 @@ async def test_purge_expired_sessions_and_audit_logs_global(
     ), {"cid": company_id, "uid": user_id, "ts": old_audit})
     await db_session.commit()
 
+    await db_session.execute(text("SET LOCAL app.bypass_rls = 'on'"))
     result = await run_retention_purge(db_session, company_id=None)
     await db_session.commit()
     assert result["sessions"] >= 1