I previously worked for a private French firm with ~700 Paris based employees. They worked very long hours, even by US standards. I thought, "If it can't be mandated here, it can't be mandated anywhere."
Hmm, that's quite surprising; in Ireland, at least for large companies, it is generally enforced fairly well (though there's an ongoing problem with the hospitals; it turns out there aren't really enough doctors if you can't make them do overtime), and France is generally stricter about this stuff than us. Were these normal employees or some sort of weird contractor arrangement?
Normal employees. We had an Irish subsidiary too, though I never visited and saw the hours they put in. My impression is they were very industrious. (Though industrious doesn't have to connect with hours)
Ireland is usually industrious without long hours. There was a UK based study on it recently that gave positive results. I can't find the link at the moment.