(I live in Canada) They can do whatever they want. I go to a variety of places for lunch. Some places have tips, some places don't. When they have tips, I ten

(I live in Canada) They can do whatever they want. I go to a variety of places for lunch. Some places have tips, some places don't. When they have tips, I tend to tip based on extent and quality of service(I never tip with percentage). My average tip for a lunch service is about four dollars, when they go above and beyond, are especially prompt and helpful, or respond to my emotional condition, I tend to tip higher. Lunch is my only daily meal, and service at lunch is just as important as the food in my opinion, whether I'm taking somebody along and want to be taken care of, or just trying to eat something that will relieve stress from work. I don't experience any pressure while tipping; I just add my few bucks, and if something special has happened, I add a couple more; I don't bother myself with percentages, except maybe to keep above the bare minimum 20% gratuity so I don't get any funny looks out the door.