The union movement has helped progress key worker rights including the minimum wage, maternity and paternity rights, equal pay, and holiday and sickness entitlements.
Mae mudiad yr undebau llafur wedi helpu i ddatblygu hawliau allweddol gweithwyr, gan gynnwys yr isafswm cyflog, hawliau mamolaeth a thadolaeth, cyflog cyfartal, a hawliau gwyliau a salwch.