A judge ruled Monday that the president of the Transport Workers Union (TWU) should be jailed for 10 days and fined $1,000 for criminal contempt for last year's transit strike.

TWU president Roger Touissaint will remain free for the next 30 days so that he can appeal the decision. The strike, which stemmed from a contract dispute with the Metropolitan Transportation Authority (MTA), shut down all subway and metro bus lines. In staging the 60-hour walkout during the December holiday shopping season, the union violated the state Taylor Law, which bars public employees from striking.

The TWU and the MTA have yet to agree on a contract. The latest offer by the MTA was rejected, so the dispute will now head to binding arbitration.