Within Holland's theory there are six personality types that correspond to a set of occupations. Holland proposed “that [job] satisfaction is highest and turnover is lowest when personality and occupation are in accord” (Robbins & Judge, 2009, 122). Therefore, people who work in jobs that are congruent with their personality are more likely to have job satisfaction than people who work in incongruent occupations (Robbins & Judge, 2009). With this information, managers could significantly increase the job satisfaction of their workforce by placing employees in job opportunities that matched the employee's personality. If Holland's theory is correct and employees are honest in examining the job preference inventory, then the theory could be an effective tool for reducing jobs