The recent story about a woman who returned to the DPB becuase the job, instead of improving her situation, cost her income suggests to me that the 'minimum wage' needs to be more than the benefit.
One can use this as an argument to reduce the DPB but that is inhumane abuse.
The solution as I see it is to ensure that abatements do not cut in so quickly or severely. So that it is definitely worth the persons getting off the benefit.
The problem with this is the petty mindedness of those who think somebody is on a good lurk ... They well may be from some peoples viewpoint but when one is concerned at the amount of government money going on benefits one should estimate which will cost less, a whole benefit or just part of one subsidising a persons efforts.
Sadly this has been the situation for decades through both left and right-wing governments. From the small mindedness I read in papers and now blogs I doubt if progress will be made ... but one can dream and hope for a good solution.