I can't comment on that because I'm sessional. As I said, I don't get paid for most of my evening and weekend work. I just have to accept that if I'm to stay in this profession.
All I do know is that working much longer than your 'official' hours is pretty much part of the territory. So whatever the contractual hours, you can be sure that teachers do give up a huge chunk of what should be their free time to get everything done. Teachers have been doing this for many years actually without complaint. It's only when cuts threaten to make their pay and conditions even worse that they feel enough is enough.
Monitoring and evaluation with all the paperwork that creates is increasing, which requires that even MORE time at home is spent working. For the number of hours they work, the pay in real terms is poor.