Question

Why should an operator wear an apron?

Answer 1

We know that machine can catch fire.

Hence, if a person is wearing apron, get caught by fire, the result will that fire will expand only on the apron.

So, he or she can remove that apron ti get out of fire.

Answer 2

An operator must wear apron to save himself from the contamination of harmful chemicals or substances.

Apart from that, an apron provides the operator a professional and sophisticated look.

Apron is also considered as the uniform in various organisations.  It also protects the dresses from any kind of stain or burning.