It is a Rita MacNeil song entitled Working man. She wrote and sang it. However other performers, such as the Men of the Deeps. It's a popular song in the Maritimes region of Canada. Many of the performers do it, whether they are Folk, Country, or whatever.

Wonderful sentiment in it. In The Cape Breton Song Collection which came out in 1985, Rita MacNeil says Upon returning home five years ago, I went down on a tour through the mine. I was deeply moved by the men who spoke to us while on that tour; hence, I wrote thie song, 'Working Man'