OSHA's Work Restriction Protection (WRP) program is a component of its ergonomics standard, which was devised and implemented to aid in preventing injuries of a specific type: work-related musculoskeletal disorders (MSDs). According to the agency, MSDs rank as the most widespread occupational health hazard, with nearly two million workers suffering these types of injuries every year. Approximately 600,000 of these workers lose time from work as a result of their injuries, and the most severe injuries may put employees out of work for months or even cause permanent disability.