Every time My Boss Demands I Work on a Sunday, I Think of Section 4 of the Factories Act

So, my boss thinks I'm indispensable, but I know the Factories Act says otherwise. Section 4 talks about restrictions on employment of children and women in factories. It says no women can be employed in factories between 7pm to 6am. Not that I'm a woman, but if my boss tries to make me work on a Sunday, I'll have a good point to make - the Act doesn't specifically say anything about Sunday working, but it does say something about working hours being reasonable and not excessive. So, all I need to do is show my boss this and remind him that he's not a factory owner, just a mere mortal.