Although with Tohru it would depend on the position he had advanced to. He might not want to return to be the second cook if he had already gained a higher position elsewhere (that didn't suck as a workplace either).
Ah, that wonīt be a problem, though, since heīll be busy running the household and looking after the children, while Minchi, the mother, works as a second cook at the inn, which wouldnīt be a problem for her. :P:P:P