Workers protested Thursday morning outside of Park Hyatt Chicago, saying the hotel won't concede on subcontracting jobs. The protest coincides with housekeeper protests at Hyatt hotels in nine U.S. cities.
Hyatt has apologized to strikers for heat lamps being turned on above them.
The apology comes the day after workers at the Park Hyatt Chicago were striking for contract negotiations. The heat lamps above them were turned on and left on for more than 45 minutes early in the morning, according to the Chicago Sun-Times.
"Hyatt regrets the events that occurred at the Park Hyatt Chicago and apologizes to everyone who was impacted by them," the company said in a statement.
Thursday temperatures reached 99 degrees, with heat index values well into the 100s.
"After looking into the incident, we have determined that the decision to turn on the heaters was made by a manager. It was clearly a decision that was not in line with our values or with our corporate policies. We have a long history of respecting our associates' rights and caring about their well-being and this unacceptable behavior is certainly is not illustrative of that history. We can assure you that this was an isolated incident and such a thing will not happen again."
The Park Hyatt in Chicago was one of nine Hyatt hotels around the country that were participating in the day long strike to protest the working conditions of housekeepers.