I am dealing with a case where the only explicit "work stations" are the cashier areas in the grocery store... then there are break rooms and such, in the back part of the store where workers assumingly spend some of their time as well.

My questions are: 1. When defining the area of the regularly occupied spaces in the grocery store, is it necessary to account for the total floor area of the store or just the cashier areas where the employees are stationed most of the time? 2. How about break rooms/back offices in grocery stores, should they be considered as regularly occupied?

Many thanks in advance.