Mae'r cytundeb hefyd yn gwarantu dyfarniadau cyflog sylfaenol teg am y tair blynedd nesaf i staff sydd ar frig eu bandiau cyflog - 6.5% cronnus dros dair blynedd.
The deal also guarantees fair basic pay awards for the next three years to staff who are at the top of pay bands – a cumulative 6.5% over three years.