For example where someone leaves a job opportunity that opportunity can be given to another person – this typically happens if that person leaves the opportunity within the first 4 weeks.
Dan amgylchiadau eithriadol gall y Prif Ystadegydd ganiatáu i’r allbynnau hynny a ddisgrifir ym mharagraff ii gael eu rhag-gyhoeddi lai na phedair wythnos o flaen llaw.