Under-performing civil servants

The goverment are clamping down on under-performing civil servants.  It seems the bottom 10% are to have only a year to improve or they may be sacked.
Of course some would say why leave the other 90% of under-performers alone, and some might even say why wait a year to sack the useless wasters, sack them now and replace them, plenty on the dole.  If they worked in any other business their jobs would be at risk all the time, only these "jobs for boys" morons would get a job for life even if they can't do it properly.