Dunkin' Donuts AC unit out. Employees forced to work outside.

Just walked by the Dunkin' Donuts between 8th and 7th. Two employees were sitting outside on the fire escape because the air conditioner unit broke inside, so the owner has them working outside and only taking mobile orders. I walked inside for about two minutes just to get a feel for how hot it was in there, and it was completely unworkable. It makes sense that they're sitting outside, but the owner has to close.

Is there a hotline to call about this situation? Should we email Dunkin' Donuts corporate division? A petition? I