How about this
The minimum wage is currently £5.93 per hour.
A 40 hour week therefore earns £237.20 a week or £948 per month. That's not a living wage without Govt top ups such as HB, Tax credits,etc
So wages are kept low - this subsidises employers and the tax-payer picks up the tab.
Double the minimum wage.
A wage of £474.40 a week or £1896 would be a living wage - especially if you add in universal benfits such as CB and have a £10K lower threshold for income tax.
The Govt then subsidises employers directly for having to pay these higher wages.
Same net difference but
The former benefit claimant now
has a job -
has choices about how spend their living wage
a whole raft of administration of benefits is removed
Meanwhile the govt
saves on HB as the cost of rents would reduce as people shop around to get better value for their money
You would also have to cap total benfit entitlement at a rate below the enhanced minmum wage to make work worthwile - that's the difficult part.