And while you are at wishful thinking, one could also ban the whole “undeclared” Greek system such as how you have to give cash to your MD to get proper treatment, how you declare half the value of a house when you sell and buy it, or how you have to pay extra to get receipts (to attach them to your tax return, well hand-washing done corrupted governments!).
Some rules "enforce themselfs". Unpaid overtime brings positive motivation for emplyers to broken. Paid overtime is negative motivations, and people are more likely to report it and sue due to lost money.