As for the lower middle class, other less prestigious occupations, many sales positions, entry-level management, secretaries, etc., would be included. In addition to professionals whose work is largely self-directed and includes managerial duties, many other less privileged members of the statistical middle class would find themselves in semi-independent to independent white collar positions. Many of those in the statistical middle class might work in what are called the professional support fields. These fields include occupations such as dental hygienists, and other professional and sales support.