Employers must keep accurate records of work-related deaths, injuries and illnesses and report on them periodically, leaving out only minor first-aid cases with no medical treatment, lost consciousness, work or motion restriction or job transfer, under regulations the Secretary issues jointly with the HHS Secretary (29 CFR Part 1904: the OSHA 300 log, 301 incident reports, the 300A annual summary posted from February to April, electronic submission for covered establishments, and reporting of fatalities within 8 hours and of inpatient hospitalisations, amputations and eye losses within 24 hours).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.