Boeing Co. will lay off 360 people in Southern California between Dec. 12 and Jan. 1, according to state-required layoff notices posted by the California Employment Development Department.

The Chicago aerospace manufacturer will lay off 98 workers in El Segundo, 137 in Long Beach and 125 in Huntington Beach, according to the notices.

They were not identified as being due to either a layoff action or a facility closure. Boeing is expected to lay off thousands of workers by the middle of next year as it closes down its C-17 Globemaster production line in Long Beach, but it’s not clear if any of this month’s layoffs are part of that process.

The notices were posted in October, according to the list. The state requires companies to alert employees and local and state governments that it plans to lay off workers under the Worker Adjustment and Retraining Notification, or WARN, act.