Once that logic is bedded-down and the efficiencies found, the next management move becomes one of two options:
1. We have too many employees knocking off early so we need fewer workers for the services we so efficiently provide, or
2. We have the capacity to do more work with the employees we have because they're currently under utilised.
......and that's the crux of the matter isn't it?
The view of the employees is that no matter what lean practices achieve, the management will look for more savings to maximize profit (and bonuses).
It doesn't have to be true of course, but the damage a
single manager can do can completely undo any goodwill established over years. There are managers in the industry that should never have been hired. Good managers are hard to come by....but that's another story.
The mindset of both parties has to change before change for the better can take place.