Every employer I've ever had, even doing factory and warehouse work, has split the day into circa-2-hour blocks, with a morning break, a lunch break and an afternoon break.
When folks are working a production line the bosses have to coordinate it - but in an office there's more flexibility. And if someone in an office wants to skip their breaks to leave early, or have a larger number of shorter breaks, they generally have that freedom.
Is this not the case everywhere?