This article analyses the basic feature that defined Russian labour ethics in medieval and early modern times – its religious aspect. There are two main elements to the subject. First, the role of Eastern Christianity and Church tradition in labour regulations, and second, the realities of everyday life in Russia and the historical peculiarities of the Russian locale, its natural conditions and climatic features, which had an influence on working activity. Until the time of Peter the Great, the labour ethics of the Russian Orthodox Church saw no significant change, and their main content could be defined as an educational process.