Our government is big on Making Work Pay and incentives to work but take a look at its own statistics:
So, even if you gave people a really big incentive (Say, a £1000/week minimum wage if you get a job) around 2 million people are going to fail.
Of course, it's possible they'll try a lot harder under this sort of deal. You can also throw in some training on how to write better CVs as well. It's not going to make any real difference to the 2 million figure. The CV training will just change who gets the jobs - not create extra ones.
The 2 million will get less benefits in real terms and possibly get hit by the bedroom tax as well.
It's not incentives, it's cruelty.