You don't get sacked from the DWP
It's an open secret everyone there is because they are the literal dregs of the jobs market, the living dead for whom the slightest glimmer of hope is daily and systematically drummed out of them before they get any ideas.
I remember having to prove to my manager that my pen was truly out of ink before he would issue a replacement from the stationary cupboard. I remember having to return wall clocks to their previous, and wrong, position having helpfully moved them on a Monday after they went forward/backwards, only to be told "that's an electricians job, do you want to cause a strike"? Sure enough, an hour later said robot plodded in to do the essentials. I remember a "desktop ergonomics consultant" coming round to everyone to tell them where the best place to put their coffee mat, ruler, pen and paper was on their desks.
People *have* to work there, but since it's a given the jobs and people are the last desperate scraps before the dole there's no point getting rid of any once in. You only get more of the same by way of replacement.