See ESC right:

Minimum wage

Relevant ICESCR Articles:

07(a)(2): The States Parties to the present Covenant recognize the right of everyone to the enjoyment of just and favourable conditions of work which ensure, in particular:
(a)Remuneration which provides all workers, as a minimum, with:
(ii)A decent living for themselves and their families in accordance with the provisions of the present Covenant;