The issue of "which jobs should exist" should be left to the market only. If typical low-end jobs throughout the country pay wages that do not guarantee a minimum living income, the government should simply make up the difference for everyone in a fair way (subject to clawback rates as earned income increases, in order to keep the overall arrangement viable).

(Lowering the cost of essential goods and services is also something that can be done by leveraging the open market. It doesn't take yet another wasteful government program, which is the typical approach in socialist and social-democrat countries.)