A Toronto window washer learned the hard way why they call it a lifeline, after he fell about 15 storeys while on the job but miraculously suffered no serious injuries.

The man was working Friday at a highrise condominium at 381 Front St. W. when for reasons that are as yet unknown, he fell from the 33rd floor.

"He did not hit the ground. His harness was on," Sgt. Jason Shankaran of the Toronto Police Service told CTV Toronto. "He was left dangling."

"When I looked out my window, I saw two men suspended in the air. One guy was limp and the other guy was helping the other one hanging limp from the ropes," Suzanne Pinker said.

Several co-workers lowered the man to a ledge just a few storeys above the ground, where he was met by firefighters and paramedics.

Firefighters took the dazed man to the ground using a ladder truck. An ambulance took him to hospital for an examination and treatment. However, he is reportedly okay.

Shankaran said the man did lose consciousness during the fall, and suffered rope burns to his hands.

The provincial labour ministry has been called in to investigate.

With a report from CTV Toronto's Jim Junkin