See ESC right:

Food, adequate

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;

11(1): The States Parties to the present Covenant recognize the right of everyone to an adequate standard of living for himself and his family, including adequate food, clothing and housing, and to the continuous improvement of living conditions . The States Parties will take appropriate steps to ensure the realization of this right, recognizing to this effect the essential importance of international co-operation based on free consent.

Related Documents:

Universal Declaration on the Eradication of Hunger and Malnutrition