In some cases, it can be to develop their CV and gain valuable work experience; in others it can provide people with a sense of purpose, structure and pride.
Mewn rhai achosion, gall ddatblygu eu CV a gallant ennill profiad gwaith gwerthfawr; mewn achosion eraill, gall roi ymdeimlad o ddiben, strwythur a balchder i bobl.