Some procedural rules date back to pre-devolution legislation from the 1970s and were not written with Wales or modern tribunal practice in mind.
Mae rhai rheolau gweithdrefnol yn dyddio’n ôl i ddeddfwriaeth cyn datganoli o’r 1970au na gafodd eu hysgrifennu gyda Chymru nac arferion modern tribiwnlysoedd mewn golwg.