Employment policies may differ in detail, and you are advised to check your employers policy before applying, but most follow the general principles below.
Gall manylion polisïau cyflogaeth amrywio, ac fe'ch cynghorir i edrych ar bolisi eich cyflogwr cyn gwneud cais, ond mae'r rhan fwyaf o bolisïau'n seiliedig ar yr egwyddorion cyffredinol isod: