This was carried out during the winter time regardless of whether it was short-time (northern Shinano) or long-time (Kanto) and Fujiki pointed out that this has the nature of "work away from home" and "reducing the mouths to feed."
これは短期（北信濃）・長期（関東）に関わらず冬期に行われており、「出稼ぎ」と「口減らし」の性格を持つものであると藤木は指摘する。