diff --git a/services/calendar_sync_utils.py b/services/calendar_sync_utils.py
new file mode 100644
index 0000000..59f03e7
--- /dev/null
+++ b/services/calendar_sync_utils.py
@@ -0,0 +1,133 @@
+"""
+Calendar Sync Utilities
+
+Shared utility functions for calendar synchronization between Google Calendar and Advoware.
+"""
+import asyncpg
+import os
+import redis
+import time
+from typing import Optional, Any, List
+from googleapiclient.discovery import build
+from google.oauth2 import service_account
+from services.logging_utils import get_service_logger
+
+
+def get_logger(context=None):
+    """Get logger for calendar sync operations"""
+    return get_service_logger('calendar_sync', context)
+
+
+def log_operation(level: str, message: str, context=None, **extra):
+    """
+    Log calendar sync operations with structured context.
+    
+    Args:
+        level: Log level ('debug', 'info', 'warning', 'error')
+        message: Log message
+        context: FlowContext if available
+        **extra: Additional key-value pairs to log
+    """
+    logger = get_logger(context)
+    log_func = getattr(logger, level.lower(), logger.info)
+    
+    if extra:
+        extra_str = " | " + " | ".join(f"{k}={v}" for k, v in extra.items())
+        log_func(message + extra_str)
+    else:
+        log_func(message)
+
+
+async def connect_db(context=None):
+    """Connect to Postgres DB from environment variables."""
+    logger = get_logger(context)
+    try:
+        conn = await asyncpg.connect(
+            host=os.getenv('POSTGRES_HOST', 'localhost'),
+            user=os.getenv('POSTGRES_USER', 'calendar_sync_user'),
+            password=os.getenv('POSTGRES_PASSWORD', 'default_password'),
+            database=os.getenv('POSTGRES_DB_NAME', 'calendar_sync_db'),
+            timeout=10
+        )
+        return conn
+    except Exception as e:
+        logger.error(f"Failed to connect to DB: {e}")
+        raise
+
+
+async def get_google_service(context=None):
+    """Initialize Google Calendar service."""
+    logger = get_logger(context)
+    try:
+        service_account_path = os.getenv('GOOGLE_CALENDAR_SERVICE_ACCOUNT_PATH', 'service-account.json')
+        if not os.path.exists(service_account_path):
+            raise FileNotFoundError(f"Service account file not found: {service_account_path}")
+        
+        scopes = ['https://www.googleapis.com/auth/calendar']
+        creds = service_account.Credentials.from_service_account_file(
+            service_account_path, scopes=scopes
+        )
+        service = build('calendar', 'v3', credentials=creds)
+        return service
+    except Exception as e:
+        logger.error(f"Failed to initialize Google service: {e}")
+        raise
+
+
+def get_redis_client(context=None) -> redis.Redis:
+    """Initialize Redis client for calendar sync operations."""
+    logger = get_logger(context)
+    try:
+        redis_client = redis.Redis(
+            host=os.getenv('REDIS_HOST', 'localhost'),
+            port=int(os.getenv('REDIS_PORT', '6379')),
+            db=int(os.getenv('REDIS_DB_CALENDAR_SYNC', '2')),
+            socket_timeout=int(os.getenv('REDIS_TIMEOUT_SECONDS', '5')),
+            decode_responses=True
+        )
+        return redis_client
+    except Exception as e:
+        logger.error(f"Failed to initialize Redis client: {e}")
+        raise
+
+
+async def get_advoware_employees(advoware, context=None) -> List[Any]:
+    """Fetch list of employees from Advoware."""
+    logger = get_logger(context)
+    try:
+        result = await advoware.api_call('api/v1/advonet/Mitarbeiter', method='GET', params={'aktiv': 'true'})
+        employees = result if isinstance(result, list) else []
+        logger.info(f"Fetched {len(employees)} Advoware employees")
+        return employees
+    except Exception as e:
+        logger.error(f"Failed to fetch Advoware employees: {e}")
+        raise
+
+
+def set_employee_lock(redis_client: redis.Redis, kuerzel: str, triggered_by: str, context=None) -> bool:
+    """Set lock for employee sync operation."""
+    logger = get_logger(context)
+    employee_lock_key = f'calendar_sync_lock_{kuerzel}'
+    if redis_client.set(employee_lock_key, triggered_by, ex=1800, nx=True) is None:
+        logger.info(f"Sync already active for {kuerzel}, skipping")
+        return False
+    return True
+
+
+def clear_employee_lock(redis_client: redis.Redis, kuerzel: str, context=None) -> None:
+    """Clear lock for employee sync operation and update last-synced timestamp."""
+    logger = get_logger(context)
+    try:
+        employee_lock_key = f'calendar_sync_lock_{kuerzel}'
+        employee_last_synced_key = f'calendar_sync_last_synced_{kuerzel}'
+        
+        # Update last-synced timestamp (no TTL, persistent)
+        current_time = int(time.time())
+        redis_client.set(employee_last_synced_key, current_time)
+        
+        # Delete the lock
+        redis_client.delete(employee_lock_key)
+        
+        logger.debug(f"Cleared lock and updated last-synced for {kuerzel} to {current_time}")
+    except Exception as e:
+        logger.warning(f"Failed to clear lock and update last-synced for {kuerzel}: {e}")
diff --git a/src/steps/advoware_cal_sync/calendar_sync_all_step.py b/src/steps/advoware_cal_sync/calendar_sync_all_step.py
index f6da55e..f743ae5 100644
--- a/src/steps/advoware_cal_sync/calendar_sync_all_step.py
+++ b/src/steps/advoware_cal_sync/calendar_sync_all_step.py
@@ -4,10 +4,7 @@ Calendar Sync All Step
 Handles calendar_sync_all event and emits individual sync events for oldest employees.
 Uses Redis to track last sync times and distribute work.
 """
-import sys
-from pathlib import Path
-sys.path.insert(0, str(Path(__file__).parent))
-from calendar_sync_utils import (
+from services.calendar_sync_utils import (
     get_redis_client, 
     get_advoware_employees, 
     set_employee_lock, 
diff --git a/src/steps/advoware_cal_sync/calendar_sync_api_step.py b/src/steps/advoware_cal_sync/calendar_sync_api_step.py
index b62c3b5..12e3d29 100644
--- a/src/steps/advoware_cal_sync/calendar_sync_api_step.py
+++ b/src/steps/advoware_cal_sync/calendar_sync_api_step.py
@@ -4,10 +4,7 @@ Calendar Sync API Step
 HTTP API endpoint for manual calendar sync triggering.
 Supports syncing a single employee or all employees.
 """
-import sys
-from pathlib import Path
-sys.path.insert(0, str(Path(__file__).parent))
-from calendar_sync_utils import get_redis_client, set_employee_lock, get_logger
+from services.calendar_sync_utils import get_redis_client, set_employee_lock
 
 from motia import http, ApiRequest, ApiResponse, FlowContext
 
diff --git a/src/steps/advoware_cal_sync/calendar_sync_cron_step.py b/src/steps/advoware_cal_sync/calendar_sync_cron_step.py
index 91fc474..708da12 100644
--- a/src/steps/advoware_cal_sync/calendar_sync_cron_step.py
+++ b/src/steps/advoware_cal_sync/calendar_sync_cron_step.py
@@ -4,10 +4,6 @@ Calendar Sync Cron Step
 Cron trigger for automatic calendar synchronization. 
 Emits calendar_sync_all event to start sync cascade.
 """
-import sys
-from pathlib import Path
-sys.path.insert(0, str(Path(__file__).parent))
-from calendar_sync_utils import log_operation
 
 from typing import Dict, Any
 from motia import cron, FlowContext
diff --git a/src/steps/advoware_cal_sync/calendar_sync_event_step.py b/src/steps/advoware_cal_sync/calendar_sync_event_step.py
index 2dd21a3..7368e19 100644
--- a/src/steps/advoware_cal_sync/calendar_sync_event_step.py
+++ b/src/steps/advoware_cal_sync/calendar_sync_event_step.py
@@ -24,10 +24,7 @@ from googleapiclient.errors import HttpError
 from google.oauth2 import service_account
 import redis
 
-import sys
-from pathlib import Path
-sys.path.insert(0, str(Path(__file__).parent))
-from calendar_sync_utils import (
+from services.calendar_sync_utils import (
     connect_db,
     get_google_service,
     log_operation,