[Darren] Assuming you meant me, yes, there are unproductive jobs, such as, according to the stories, a lot of the management jobs at Rover. Paying people a fat salary to do nothing does nobody any good, including the people paid the fat salary.
CdM] You're right in that I wasn't defending the practices I listed (and I'm pretty sure Rosie wasn't either). The point we were making was that it's a conscious political choice for the government to let Rover go to the wall, and that this is a bad thing. I'd echo most of INJ's and Raak's answers to rab, as well. I think it is the government's responsibility to do something about employment.
There's a really lovely argument in Peter Singer's The President of Good and Evil against the "it's my money" position re: tax (and by extension re: interventionist economic policy), which I'm now going to have to dig out and mention. There we go, the book was useful for something after all.