All animals slaughtered by any slaughterhouse duly licensed under this part shall be inspected by an inspector duly authorized by the department, both before and after slaughtering, and no animal shall be slaughtered, or after slaughter be sold, transported, offered for sale or transportation, or received for transportation in commerce unless the slaughtering thereof or the use thereof in commerce, after slaughtering, is approved by an inspector.

The management of any processing establishment, slaughterhouse, or the owner of any animal to be slaughtered requiring the services of an inspector in excess of eight consecutive hours on any workday, or in excess of forty hours in any workweek, or on legal holidays, shall pay to the department for overtime inspection services, the current state overtime rate for each hour of work performed by the inspector.

The department shall pay the inspector for all overtime inspection services performed; provided that the party requesting or requiring the overtime inspection services shall sufficiently in advance of the overtime period arrange with the department for the services.