Time to Change Wales is a national campaign to improve knowledge and understanding about mental illness and to get people talking about mental health in order to improve working people's wellbeing. Survey results show that, at any one time, 1 in 4 people are experiencing mental health problems, which can equate to approx 25% of staff in a workplace. By being able to talk more openly about our mental health at work, the working lives of people experiencing mental health problems can be greatly improved and sickness absence greatly reduced. Amser i Newid Cymru yw'r ymgyrch genedlaethol gyntaf i roi diwedd ar y stigma a'r gwahaniaethu a wynebir gan bobl â phroblemau iechyd meddwl. Mae pobl sy'n cael profiad o salwch meddwl yn aml yn wynebu stigma a gwahaniaethu yn y gweithle, yn gymdeithasol ac o fewn teuluoedd. Gall hyn wneud bywyd gyda phroblem iechyd meddwl yn anoddach na'r symptomau eu hunain. Rydym am wella gwybodaeth a dealltwriaeth o salwch meddwl ac, yn bwysicaf oll, ysgogi pobl i siarad am iechyd meddwl.