I just don't buy the concept that restaurants, small businesses, and large chains alike will be systematically laying off workers left and right because they just can't handle the economic side of having to pay a little bit more for labor.
Additionally some mega-corporations like Walmart basically have a standard business practice of engaging in FLSA violations and simply paying the fines to make up for it.
The reason you don't buy it is because every time a minimum wage increase is discussed the right has the same wolf cry and it never happens as they whined it would.