HAWLIAU
A.C.A.S.
http://www.acas.org.uk
Health and Safety Executive
http://www.hse.gov.uk
Comisiwn Cydraddoldeb Hiliol
http://www.cre.gov.uk
T.U.C. Cymru
http://www.wtuc.org.uk/cymraeg.html
Cyngor ar Bopeth
http://www.adviceguide.org.uk/CY/wales.htm
Comisiwn Cyfle Cyfartal
http://www.eoc.org.uk/Default.aspx?page=0&lang=cy
Hawliau Gweithio
http://www.workingrights.co.uk/
Mae croeso i chwi awgrymu gwefannau i'w hychwanegu at y rhestr.