Even further, ANY federal government worker who approaches a private business and demands access to same, should be stopped and forced to obtain a court order/warrant to enter the premises. Deny Authority, deny access, and deny entry without local judicial approval.
OSHA is like the cop that stops you out on the road, and as he approaches your door, pulls out his club and smashes your taillight lens. Then he tells you you have a broken taillight, and cites you for it.
Everybody is guilty until proven innocent.
Corollary - don’t argue with guys with a badge and carrying sidearms.