When my kids get their first part-time job as a teenager, I'm not expecting them to earn enough to live on. It should give them spending money, help them pay for car insurance, etc. And more importantly, the job should give them some experience working -- dealing with managers, coworkers, and customers who they may not like, showing up to work whether they feel like it or not, and doing what needs to be done even if it's not precisely in their job description. And it should probably be unpleasant enough to motivate them to do more with their life. An entry-level job at McDonalds might not be my first choice, but it would fit these requirements just fine.

If my kids are still working at McDonalds 10 years later, then I'm not going to be complaining that McDonalds doesn't pay them enough to live -- I'm going to tell my kids to do something with their life and get a real job that requires real skills. And that job will be worth a living wage.