Tennessee Code Title 62. Professions, Businesses and Trades § 62-26-206

(1) Be at least twenty-one (21) years of age;

(2) Be a citizen of the United States or a resident alien;

(3) Not have been declared by any court of competent jurisdiction incompetent by reason of mental defect or disease unless a court of competent jurisdiction has since declared the applicant competent;

(4) Not be suffering from habitual drunkenness or narcotics addiction or dependence;

(5) Be of good moral character;

(6) Possess or employ at least one (1) person who possesses at least two thousand (2,000) hours of compensated, verifiable, investigative experience satisfactory to the commissioner or has one (1) year of applicable, related experience or education in a related area of study approved by the commissioner; and

(7) Pass an examination to be administered at least twice annually by the commissioner, designed to measure knowledge and competence in the investigations company business.