In every occupation there are employees who perform job duties and employees who supervise work done by others. Many managers often progress from the rank and file to their leadership roles. Management training courses are often part of the personnel process that helps managers make the transition from subordinate to supervisor.

A manager may work on the front lines of customer service, or may operate in the background. Distinctions between subordinates and supervising personnel may not be cut and dried in some work environments.

In retail industries, for example, such as supermarkets, the hospitality industry, and the food and beverage industries, managers are often on the front lines of customer service. One recruiting tactic for these industries is the offer to train managers from existing subordinate staff. Staff can essentially function as managers while being trained. Such an on-the-job training scenario is not uncommon.

The turnover rate in the retail industry is often high and the need to continue services requires developing talent among existing staff. Staff are often cross-trained to step into roles in case an unexpected employee shortage occurs. Employees may be tasked with helping with cross-training other staff members. Consequently, there is a crossover of work tasks between a manager and her staff.

Due to the large amount of cross-training, it can be difficult for customers to choose the manager in a business establishment. This occurs when an employee not only performs tasks, but also supervises those who perform them. Employees can become as versatile in skills as a manager. An employee can perform tasks related to management. Management training courses can help employees officially transition into a managerial role and prepare existing managers for formal training to become more qualified managers.