Mishnah, Baba Metzia 7:1

If one hired laborers and ordered them to work early and late- (in) a place where it is customary not to work early or not to work late, one has no right to compel them. (In) a place where it is customary to give (them) food; to provide relish, one must provide relish; everything (must be done) according to the local custom. It once happened that Rabbi Yochanan ben Massia said to his son: ‘Go out (and) hire laborers for us.’ He went, and agreed to give them food. When he came to his father, he said to him: ‘My son even if you prepare for them (a meal) like Solomon’s banquet in his time, you have not discharged your duty toward them, for they are children of Abraham, Isaac, and Jacob. Rather, before they start work, go out and say to them: ‘On condition that you have no claim upon me other than bread and beans.’ Rabban Shimon ben Gamliel says: He did not have to say (it); everything is according to the local custom. [Soncino translation. Edited for gender neutrality]