This is normal, no?

Sad, but normal. I've never had an employer that would find it acceptable for their staff to leave two minutes early. They wouldn't even accept us beginning to get ready to leave until our clock out time, because up to that point we are supposed to be working.

Two minutes doesn't sound like a lot, but I suppose they see it differently to us, the wageslaves.

If 20 salaried staff members regularly leave work 2 minutes early, that's 40 minutes of lost productivity/paying wages to staff that aren't even there, per day. 3 hours 20 minutes per week, 10 hours a month.

That's assuming they didn't stop working a few minutes earlier in order to actually be at the door clocking out 2 minutes early. In reality, they were probably getting ready to go, packing their stuff, grabbing their coat, going to the loo, maybe 4 minutes before actually leaving.

So, it's more like 6 minutes of lost time per person, and now that's 2 hours lost PER DAY across all 20 employees, or 10 hours a week, 40 hours a month.

Obviously I wouldn't nitpick about such silly things, but an employer, who is paying out of their own pocket (in as much as the stolen production value of the proletariat is their money), is going to be looking closely at the timesheets and finances, do long term calculations like this, and will dehumanise their employees to save money.

So, when they see one person leaving 2 minutes early, they see a slippery slope, and the potential for dozens of hours or more of wasted wages per month if they don't nip it in the bud.