My son's work wants them to do sales now. They are WIFI/mobile network technicians.

So they are offering them commission but say in the same breath that because they now getting commission they will no longer be entitled to Overtime.

So is this legal? Or are they taking a chance? I can't find anything online that covers such a scenario.

I'm thinking that they can only do this through a consultation process and if my son agrees to this after the Consultation

Imagine - doing 10 hour overtime doing the Technical part of the job but you don't get paid and you don't make any sales. I'll also add that no dedicated time is allotted for the technicians for sales. It must be fitted in during the normal duties

thanks Sam