Monks do not work for commercial reasons. Rather, the work is aimed at funding their lives. The Rule of St Benedict says that monasteries must be self-sufficient and independent.
St Benedict was also of the opinion that monks should not be idle - they should roll up their sleeves and get stuck in. Work also contributes to the formation of a human being as a whole; it is a condition for spiritual growth. Moreover, manual labour is an outlet for the monks’ creativity.