Mae canllawiau ac egwyddorion y Comisiwn yn gosod disgwyliadau clir ynghylch arferion y dylai pob cyflogwr sector cyhoeddus eu mabwysiadu er mwyn sicrhau bod trefniadau oriau heb eu gwarantu ond yn cael eu defnyddio dan amgylchiadau neilltuol iawn, sydd wedi'u diffinio'n glir.  Datblygwyd yr egwyddorion drwy gydweithio agos gyda Chyngor Partneriaeth y Gweithlu Llywodraeth Cymru a'i is-grwpiau mewn enghraifft o bartneriaeth gymdeithasol ar waith.
The Commission’s guidance and principles set out clear expectations on practices which all public sector employers should adopt in order to ensure non guaranteed hour arrangements, are only used in clearly and narrowly defined circumstances.  The principles were developed through close working with the Welsh Government’s Workforce Partnership Council and its subgroups in an example of practical social partnership.