1) Late return to work
2) Tipsy / drunk workers taking longer to get stuff done
3) tipsy / drunk workers doing stuff worse, thus needed it to be reworked
4) tipsy / drunk workers not inspecting properly leading to increased returns from customers
5) the occasional broken / lost item (with JIT this can be a considerable delay if it's the right item)
6) occasional broken tools
7) sober workers resentful at drunk workers and at bad management not doing anything about it.
etc etc.
Yep, a lot of this is down to management, but the UK has a poor reputation for the quality of middle management in industry.
