One John K Williams (1986) writes that in mercantilist France,
The government actually imposed maximum wage laws. Any employer who paid wages above a legally defined ceiling was charged with an economic crime, tried, and if found guilty, may well have been sent off to be chained to an oar in one of France’s sea-going galleys. The shocker is that numerous employers defied these maximum wage laws!
I wasn't sure though what or when he was talking about and was hoping someone could tell me.
Googling a little I find that during the Revolution there was a Law of the Maximum, but this doesn't sound like what he was talking about.