Janitors and cafeteria workers in Montgomery County have more job security after the County Council on Tuesday narrowly passed a contentious bill guaranteeing low-wage workers 90 days of employment after their employer’s contract ends.

The measure requires a company that wins a bid to replace a contractor providing services like security, janitorial work, building maintenance or food preparation to hire for 90 days the employees of the outgoing contractor to perform the same work. The new contractor can hire fewer than the total number of affected employees if it determines it doesn’t need all of them to do the work, but it has to maintain a list in preferential order of those not hired and do any future hiring from that list until every affected employee has been offered a job.