Roshan Lal was killed when the rashly-driven bus by his co-worker Mahendra Lal (35) ran him over at the depot, Assistant Superintendent of Police Vipin Tada said.
The accused managed to flee the spot, he said.
A case has been registered, he said, adding efforts are on to nab the absconding accused.
In a separate incident, putrefied body of an unidentified youth was today found by Mussoorie police in Gang Nahar near Hasanpur here, police said.