Give tips to all retail service workers

I’ve often wondered why food servers get tipped while others in retail don’t. Both most likely get minimum wage. Both serve the public. Yet the person who waits on you, say, in a department store or any other type retail outlet, doesn’t receive a gratuity. Can you give a believable explanation?

This story was originally published November 9, 2015 at 8:42 AM with the headline "Give tips to all retail service workers."