PITTSBURGH (AP) -- The former construction site superintendent for a Pittsburgh-area construction firm will spend three years on probation, including six months' house arrest, for willingly violating federal workplace safety rules that contributed to a worker's death 2009.

Robert Kennedy, 60, who now lives in Rapid City, S. D., was sentenced Wednesday after pleading guilty in the death of Carl Beck, of Butler. The 29-year-old roofer died when he fell 42 feet from a motel roof on Aug. 15, 2009.

The owner of the construction firm, Christopher Franc, of Valencia, had previously been fined $539,000 by the federal Occupational Safety and Health Administration and received the same sentence as Kennedy in 2010.

Federal prosecutors said Kennedy hid the violation by putting fall protection on the roof after Beck died, then claimed it was in place when Beck fell.