Here in the UK we had supervisor/management positions trying it on for 0 hour contracts and minimum wage for months, although they seem to have gotten the message now they're having to literally shut their doors because they can't get staff. Worst one I saw was night manager of a massive central hotel for minimum wage. I wonder if it's that people have wisened up to the "take on extra responsibilities for no pay because it will look good on your CV" bullshit.

Bearing in mind it's only really the last generation or so in the UK who have gotten used to not expecting things like double pay for a night shift, workers expecting to be paid about £10p/h for a bar shift finishing at 4am still isn't a bad deal at all