[Carth]

Retired workers aren't the big problem, it's the amount of unemployed workers that is the double whammy here.

If you're unemployed you receive benefits (paid for by taxation) yet pay no tax.
Get the unemployed into work and you immediately save on paying benefits whilst also getting tax income.

If you're long term sick (take a look at some of the figures lately) you get benefits without paying tax.
Deciding who is sick and who is just taking the piss is a massive undertaking, as seen with the disabled payment processes which have caused many problems to the genuine claimants.

. . . screwing businesses over isn't helping here at all