People in employment who are on permanent contracts (or on temporary contracts and not seeking permanent employment) and who earn more than two thirds of the UK median wage by quarter (StatsWales)
16 Canran y bobl mewn cyflogaeth, sydd ar gontractau parhaol (neu ar gontractau dros dro, ac nad ydynt yn ceisio cyflogaeth barhaol) ac sy'n ennill mwy na dau draean o gyflog canolrif y DU