One in four skin cancer deaths in Ireland are from the construction, outdoor and farming industries according to the Irish Cancer Society.
The charity has launched its annual SunSmart campaign with the Irish Farmers' Association and the Construction Industry Federation.
Over 10,000 people are diagnosed with skin cancer every year in Ireland.
The Irish Cancer Society is appealing to Irish farmers and construction workers to be extra vigilant during the summer months.
It follows a recent report published in the British Journal of Cancer that shows working in the sun could lead to one death and around five melanoma cases a week.
The charity is calling on companies who have workers predominately outdoors to put in place policy in relation to protection from sun exposure.