The Office for National Statistics and HM Revenue & Customs publish data for Wales on payrolled employees, mean pay, aggregate pay and single month estimates for median pay.
Cyhoeddir data ategol ar y gweithlu practis cyffredinol, poblogaeth practisau cyffredinol (StatsCymru), amddifadedd ar lefel practisau cyffredinol a fferyllfeydd cymunedol hefyd gan Lywodraeth Cymru.