Ukeoi (請負) – to form and undertake contract work. This usually means you get paid by the job, not by a specified time-frame. Carpenters in Japan typically form contracts with house-makers (large commercial housing companies) or intermediary companies called koumutens, where one or sometimes two carpenters will agree to do a specified range of work for a specified fee.
There is usually a general time-frame in which they are expected to finish, with electricians, plumbers, wallpaperers, and various other workmen working around the carpenter’s progress. The job of the carpenter varies depending on the company hiring him, as well as his fee. The house-building industry is constantly trying to streamline the process, resulting in the specialization of various steps throughout the construction phase.