You are not entitled to any additional or overtime hours pay if you choose to work more hours than you are contracted to do unless you have agreed this in advance with your manager.
Nid oes gennych hawl i unrhyw dâl ychwanegol neu oriau goramser os ydych yn dewis gweithio mwy o oriau na'ch oriau contract oni bai eich bod wedi cytuno ar hyn ymlaen llaw gyda'ch rheolwr.