By law, California businesses must report any injuries sustained by employees that result in missed work, job performance restrictions or medical treatment beyond first aid. A report at Reveal made the initial claims, and Tesla has repudiated the report itself, saying that it has never intentionally misrepresented its safety record. Whatever the actual story, Cal/OSHA told Bloomberg that it takes workplace hazards and allegations of underreported work-related injuries seriously, and that is why it is investigating.

Update: A Tesla spokesperson tells Engadget that Cal/OSHA is "required" to investigate any injury claims, whether "they have merit or are baseless." It adds that it passed a previous Cal/OSHA investigation with no violations and has never received any violations for inaccurate record-keeping. Its full statement is below.