Hyatt Corp. Chicago hotel workers were going about their regular striking business July 21, and all of a sudden, temperatures rose upwards of 83 degrees. The Hyatt manager deviously turned on 10 heat lamps surrounding the striking workers.

The irony of it all – the workers were demonstrating to draw attention to working conditions of housekeepers. The workers have since filed a complaint with the National Labor Relations Board against Hyatt Corp, reported Unite Here Local 1, which represents 170 Park Hyatt employees.

A Hyatt spokesman has had no reservations in terms of placing blame. The spokesman said the hotel’s general manager has accepted responsibility for the incident. The worker happened to retire Friday, a decision the Hyatt said was previously planned.

The Hyatt announced that it has filed charges against the union, reported the Chicago Tribune. The charges are for “unlawful picketing, in addition to the existing charges of its refusal to negotiate in good faith.”