I worked at one company that was 7am-5pm for corporate office work. The company grew from a small retail parts company decades ago, but never changed the mindset. So even the office work was treated like shift work. Office workers wouldn’t even check email before 7am. Many times just hanging out in the cafeteria until 7 on the dot when they had to be at their desks. Further as soon as 5pm hit exactly, all the office workers would drop what they were doing and walk out to the parking lot with all of the other blue collar shift workers.

This resulted in things like Purchase Orders getting delayed by a day because it arrived at the approver at 5:01pm and the approver was gone. There was nearly no weekend office work, which caused its own problems.

It was such a strange place to work.