Can OSHA Just Show Up Unannounced?

Can OSHA Just Show Up Unannounced? Can OSHA just show up unannounced? Normally, OSHA conducts inspections without advance notice. Employers have the right to require compliance officers to obtain an inspection warrant before entering the worksite. Why would OSHA show up unannounced? Inspection – Some inspections are planned, but OSHA can also make unannounced visits,