ATLANTA -- Federal authorities have imposed the maximum allowable fines on a film company in the on-set death of a stuntman for "The Walking Dead."

The Occupational Safety and Health Administration said in a news release Friday that it issued a "serious citation" to Stalwart Films LLC and proposed penalties totalling US$12,675 "for failing to protect employees from fall hazards while filming."

John Bernecker, 33, died July 12 from injuries suffered in a fall on the hit show's set in Senoia, about 35 miles (56 kilometres) south of Atlanta.

According to a report from the Coweta County Sheriff's Office, assistant director Matthew Goodwin told a responding officer that Bernecker intended to fall onto a pad but instead fell head-first onto concrete about 22 feet (7 metres) below.