Therefore, individuals who hold more than one job would be counted more than once. Growth plus total replacement needs are an appropriate measure of the number of expected job openings. Some programs last only a few weeks while others may last more than a year. In some occupations, a license is needed that requires passing an examination after completion of the training.
Some occupations requiring work experience are supervisory or managerial occupations.
Individuals undergoing training are generally considered to be employed in the occupation. This category includes occupations in which workers may gain experience in non-work activities, such as professional athletes who gain experience through participation in athletic programs in academic institutions.