Already prices are increasing everywhere in the GTA. Go to any food court and I bet you going to be paying close to $10 for a small lunch.
When I was in school back in 1995, I paid around $5 bucks for lunch.
When we were in Arkansas a week back groceries were about the same as here but a full buffet with salad bar, chicken, pasta, meatballs, pork tenderloin and veggies was $9.99, all you can eat.
One area to think about the unforeseen consequences of a higher minimum wage is child care. Child care workers (daycare) tend to be working for close to--a little above minimum wage. If you raise the wages the costs go up. Even if they make $15 today, raise min wage to $15 and now you have to jump all of them up as well (maybe not to 20 but say 18 or 19) to keep them.
Now you have the working poor getting maybe a few dollars more per hour but their childcare costs will spike. In many cases they will not be any better off, in some cases it may mean they cannot work.
As far as fast food etc. I think some costs will be passed on but it may not result in say a near 50% increase since wages are not the only input cost. For daycare, wages are a much bigger percentage of the costs so the prices will spike. There are many other small business cases where wages are a big portion of cost and here is where you will see the big negative impacts (child care is just one example).
It is one of those things that sounds good from a social perspective but may actual hurt the working poor if not well thought out.
For big corps, it just means some shuffling, higher prices, maybe fewer workers. The big impact is small business where wages are a big input cost, here we will see the biggest price increases and/or job losses. Specially with a drastic change like a jump to $15.
Borrowing from my other post, paying the people who look after your kids the minimum wage to save money so you can go watch millionaires play ball. Fade to Harry Chapin and The Cat's in the Cradle....https://www.google.ca/url?sa=t&rct=...=DuphkC40o5nZqct-yQ8t6A&bvm=bv.75097201,d.aWw