"Minimum wage may be understood to mean the minimum sum payable to a worker for work performed or services rendered, within a given period, whether calculated on the basis of time or output, which may not be reduced either by individual or collective agreement, which is guaranteed by law and which may be fixed in such a way as to cover the minimum needs of the worker and his or her family, in the light of national economic and social conditions."
Minimum wages: wage-fixing machinery, application and supervision, Report III (Part 4B)