Tennessee Code Title 62. Professions, Businesses and Trades § 62-40-101

(1) “Industrial hygiene” means the science and art devoted to anticipation, recognition, evaluation and control of environmental factors or stressors arising in or from the workplace that may cause sickness, impaired health and well-being or significant discomfort and inefficiency among workers;

(2) “Industrial hygienist” means a person who possesses a baccalaureate degree issued by an accredited college or university in industrial hygiene engineering, chemistry, physics, biology, medicine or related physical and biological sciences and who, by virtue of special studies and training, has acquired competence in industrial hygiene. The special studies and training shall have been sufficient in industrial hygiene engineering, chemistry, physics, biology, medicine or related physical and biological sciences to provide the ability to:

(3) “Professional industrial hygienist” means a person who possesses a baccalaureate degree issued by an accredited college or university in industrial hygiene, engineering, chemistry, physics, biology, medicine or related physical and biological sciences and who has a minimum of three (3) years full-time industrial hygiene experience. A completed master's degree in a related physical or biological science, or in a related engineering discipline, may be substituted for one (1) year of the experience requirement; and a similar doctoral degree may be substituted for an additional year of the experience requirement. Nonexclusive examples of professional industrial hygienists are certified industrial hygienists and industrial hygienists in training, as recognized by the American Board of Industrial Hygiene.