The province is expected to introduce legislation on Monday which will require chain restaurants to put nutritional information on menus.
Health Minister Deb Matthews made the announcement for plans to do so last year, but has been vague on when Ontario would act.
The idea was recommended last spring by a panel looking into improving health promotion.
The goal: to give customers information they may not have in order for them to make healthy food choices. The province hopes it will counteract rising obesity numbers, an issue the healthcare system has been struggling with.
Calories counts would have to be places on menus and menu boards.
This would not affect smaller restaurants.