Naughty, naughty!

So you go down your local for a drink or two.  When you've finished, you have to pass the bar on your way out.  If you think about it, do you take your empty glass and put it on the bar as you pass? I've done that and I bet many of you have too. But a pub in France where this happened has been fined on the basis that this amounts to "undeclared labour".  Don't quite understand the logic of it, but the French authorities claim that what was going on was "an infringement of labour laws". Presumably if you hadn't done it, they would have had to employ someone to clear up your empty glasses, so you're denying someone a job, and denying the government the taxes that would flow from that.  Or perhaps it's just a case of officious bureaucracy.