You shouldn't have to move Jobs because your employer is a ****. You can if you like but you shouldn't have to.
I work in a sector where moving is the only way of getting a decent payrise other than the standard 2/3%
McDonalds actually pay a decent wage, especially if you get in to their management training programme. A branch manager earns 40k+ per annum in some areas
My mates been a manager of loads of places, Ladbrokes, cex, sainsbury, and he's a proper house ****er
Minimum wage will always have a consequence though on the consumer, so for example when we were exploiting Eastern Europeans under the EU's nose, we paid them peanuts, hence the consumer could buy stuff ridiculously cheap, but now that has all been knocked on the head, prices have spiralled. BTW I'm not suggesting that the minimum wage shouldn't be higher, and even if people completely disagree with me on the EU bit, my main point remains, for every wage there is a cost to the consumer. So if you go out for a cheap meal at a restaurant, we need to be asking ourselves how much our servers are being paid, and how much more would you agree is a fair price increase on your bill.
The whole capitalist issue is, that if minimum wage was increased for unskilled jobs. People in skilled jobs getting the same pay would just leave and head out for a simple job leaving a hole in skilled trades. Unless all wages were then increased, which would invariably raise taxes and prices on to the consumer putting us back to square one.