They have created a balance of people who will sit on ass on benefit, because of working tax credit, lone parents get the rent paid for them free, school meals, council tax, so getting out of the benefit trap, why should they?
Example of
One person one child
Yearly income =£5,000
Tax/NI bill =£0
Tax credit/Child benefit =£7,913
Total income =£12,913
I have more figures about couple one working with 2 children and others if you want to see those.