In most companies, counter and rental clerks are trained on the job, sometimes through the use of videotapes, brochures, and pamphlets. Clerks usually learn how to operate a firm's equipment and become familiar with the firm's policies and procedures under the observation of a more experienced worker. However, some employers have formal classroom training programs lasting from a few hours to a few weeks. Topics covered in this training include the nature of the industry, the company and its policies and procedures, operation of equipment, sales techniques, and customer service. Counter and rental clerks also must become familiar with the different products and services rented or provided by their company in order to give customers the best possible service.

Counter and rental clerks should enjoy working with people and should have the ability to deal tactfully with difficult customers. They also should be able to handle several tasks at once, while continuing to provide friendly service. In addition, good oral and written communication skills are essential.

Advancement opportunities depend on the size and type of company. Many establishments that employ counter or rental clerks tend to be small businesses, making advancement difficult. But in larger establishments with a corporate structure, jobs such as counter and rental clerks offer good opportunities for workers to learn about their company's products and business practices. These jobs can lead to more responsible positions. It is common in many establishments to promote counter and rental clerks to event planner, assistant manager, or salesperson. Workers may choose to pursue related positions, such as mechanic, or even establish their own business.

In certain industries, such as equipment repair, counter and rental jobs may be an additional or alternative source of income for workers who are unemployed or semiretired. For example, retired mechanics could prove invaluable at tool rental centers because of their knowledge of, and familiarity with, tools.