Lyric discussion by seeing 

Cover art for Takin' Care of Business lyrics by Bachman-Turner Overdrive

It exemplifies the cliché that being a musician isn't a real job. Musicians work hard writing the songs that we love to sing along with, so it is a real job. We pay them to entertain us, so why would you say that it's not a real job? The hours may be irregular, but so are seasonal jobs like lifeguarding in places that get cold and snow in the wintertime.

My Interpretation