Petition if you receive matienance payments or CSA payments the benefits should be reduced

If a person not working and receives any type of benefits excluding Child benefit gets either matienance from an ex partner or payments through CSA, the benefits they receive should be altered accordingly, so that they DO NOT gain by not working.
This will not only help the Country by lowering the Welfare Bill but would not reward them for not having any intention of not working, why should they get more for not working especially when the Children are of a School age and there is nothing at all stopping them from going to work. We need a system that does not reward people for having child after child and not paying a penny into the system.