To start this piece from Bloomberg's Megan McArdle isn't dismissive of low-wage retail jobs. Indeed the argument here is that right now it's difficult to find a full-time job to make a decent income. Another argument is mandating how much a business should pay their employees could cause more harm than good.
Conclusion: "Ultimately, this comes back to the weak job market. As long as the
demand for low-skilled labor significantly lags the supply, workers will
continue to struggle. Unfortunately, legislators can’t mandate a strong
labor market. So we’re apt to end up mandating more labor market