Large companies actually enforce this fairly well. For instance, there is software on employees' computers which will hard shutdown the computer after a couple

Large companies actually enforce this fairly well. For instance, there is software on employees' computers which will hard shutdown the computer after a couple warnings. Companies which offer transport for employees have curtailed bus service from last departure at 12am to last departure at around 9pm. It is implemented in a fairly interesting way though. Before the new regulation, the overtime policies were calculated on a weekly basis. Now it is done on monthly basis. I think this is done to allow you to 'burst' above the 52h limit in some weeks while staying in compliance on monthly basis. Note that companies will deduct an hour a day for breaks whether you use it or not. So even a 52h week can mean 52+5=57/5=11.4h per day. So 5 straight nearly 12h days is technically not considered overtime.