We later linked to a Times City Room article, but obviously didn't read it too closely. According to that piece:
The worker, in his 60s, was on a ladder beneath the grate in front of the IHOP restaurant at 237 East 14th Street, near the Third Avenue stop on the L, about 10:35 a.m., the authorities said.
He was inspecting the grate when he fell from the ladder, said Charles Seaton, a spokesman for the Metropolitan Transportation Authority.
The Times noted that the worker was not seriously injured.
Several people said that falling through a subway grate was one of their worst city fears... wanted to put your mind at ease.
Anyway, you should be more worried about falling air conditioners.