A tweet from the New York City Fire Department says that the two workers are trapped on the 45th floor - one level short of the roof.
NBC New York reports that 60 fire officers are attending the scene.
More top news
Mexico's navy says there are no missing children at a collapsed school where rescuers have been hunting for a trapped girl.
A colder night ahead as temperatures slide under clearer skies. It will be very chilly out in rural spots.
Aboard the flight to the Invictus Games in Canada, the competitors already feel like winners before the plane has even touched down.