Minimum Wage Increase

I’m no economist and maybe this view is a bit simplistic but does anyone else suspect that the NMW is actually a brake on earnings, the endless supply of cheap foreign labour coming from economies where £8 odd an hour is problably 3time what they earn at home coupled with the universal credit effect where the work-shy and people trapped on benefits have to go out and work and bosses have no real need to pay anymore, discuss