A judge temporarily blocked President Donald Trump’s buyout offer to federal civilian employees from taking effect Thursday, hours before the deadline the administration set for more than 2 million employees to decide whether to take resignation packages with pay through September.

U.S. District Judge George O’Toole in Massachusetts scheduled a hearing for Monday on whether to grant a temporary restraining order.

The judge could opt to delay the buyout further or block it on a more permanent basis when he next considers the legal challenge by the unions at a hearing on Monday.