This story has been updated.

A defense contractor is laying off 279 janitorial and housekeeping workers at Brooke Army Medical Center when its contract expires in November.

CBRE Government and Defense Services announced the mass layoff in a letter to the Texas Workforce Commission this month.

“This layoff results from the end of our contract with the client,” wrote Howard Young, the company’s chief people officer, in the letter. “These layoffs are expected to be permanent. However, there may be an opportunity for the impacted employees to be hired by the new service provider.”

Employers with 100 or more full-time employees are required to submit a notice to the state under the federal Worker Adjustment and Retraining Notification (WARN) Act of 1988. Those layoffs are listed online

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