Do I need to inform immigration if I switch from full time to part time on Work Visa.

Basically the title. I’ve tried searching online. My job is telling me they might have to cut down on my hours and switch me to part time. I have a 5 year visa so I’m not too concerned about working, and plan on finding a better job in 3 years so I’m not worried.

But my big concern right now is whether I’m technically fulfilling my visa requirements if I’m only working 20 hours a week? Well I need to notify immigration I’ve switched from full to part time?

by PinkPrincessPol