Why is everyone discussing the grammar and no one questioning why laws have such silly exceptions? Why should there be an exception for the packaging of perisha

Why is everyone discussing the grammar and no one questioning why laws have such silly exceptions? Why should there be an exception for the packaging of perishable goods? It is not like the goods cannot be packaged if the workers are paid extra for working over-time. And it is not like a well planned logistics chain should necessarilly be forced to have workers working overtime. So really, this exception is just a gift to a specific industry.