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Bern and Jan are right, very very much so.
It has been said many times that "dead wood" or put another way, people who are not pulling their weight or not doing their job properly, know it is so difficult for any company - public or private, to get rid of them; many of them almost don't care about the quality of work they do, or the care they should give.
The unions will fight any company who wants and needs to get rid of these useless people, even though they know that it is harming that company's chances of working well or making a profit.
There are also many practices of running a business - again, public or private, that are wasteful, where things can be done better and more efficiently.
If good managers are allowed to manage (manage people and finding ways of doing things better) and good supervisiors are allowed to supervise (supervise staff and ensure those new, good practices, are put in place) and the staff are doing their job properly too, there will be a lot of efficiencies and savings made.
It's a culture that has to change if things are to improve.
Roger