https://cy.wikipedia.org/wiki/Uchafswm_un_rep
Uchafswm un rep - Wicipedia
unrepwicipedia
https://www.citizensadvice.org.uk/cymraeg/Gwaith/working-hours-and-rest-breaks/Edrychwch-a-ydych-chin-gweithio-mwy-nar-uchafswm-o-48-awr/
Edrychwch a ydych chi'n gweithio mwy na'r uchafswm o 48-awr - Cyngor ar Bopeth
Check if you're working more than the legal limit of 48 hours a week. Find out what you can do if your employer is asking you to work over the limit.