Guidelines were put in place to promote responsible tradesmen, who were held accountable for their own work and to protect the individual trade and the general public from unskilled workers. To become a master, a journeyman has to submit a master piece of work to a guild for evaluation. Only after evaluation can a journeyman be admitted to the guild as a master. Sometimes, a journeyman was required to accomplish a three-year working trip, which may be called the journeyman years.