Although the advancement opportunities for postal clerks are considered better than for mail carriers, they are still rather limited. Large numbers of postal clerks do not move up to higher-level positions; however, as they accrue seniority, individuals may bid (by written request) for more preferable assignments, such as window jobs or other work on the day shift. Assignments to any higher-level positions are based on merit, with consideration given to the employee's education, experience, training, and aptitude on written examinations.
Employees of UPS who want to advance to the position of account executive will most likely first hold a job as an administrative assistant to gain experience assisting customers.