Vt. Stat. Ann. tit. 26, § 2908

The Commissioner may, pursuant to 3 V.S.A. chapter 25, refuse to issue or may suspend or revoke a license on any one or more of the following grounds:

(1) failure to inform a subject to be examined as to the nature of the examination;

(2) failure to inform a subject to be examined that his or her participation in the examination is voluntary;

(3) making a material misstatement in the application for original license or in the application for any renewal license;

(4) willful disregard or violation of this chapter or of any regulation or rule issued hereunder, including willfully making a false report concerning an examination for polygraph examination purposes;

(5) conviction of a felony or misdemeanor involving moral turpitude;

(6) making any willful misrepresentation or false promises or causing to be printed any false or misleading advertisement for the purpose of directly or indirectly obtaining business;

(7) having demonstrated unworthiness or incompetency to act as a polygraph examiner as defined by this chapter;

(8) allowing one's license under this chapter to be used by any unlicensed person in violation of the provisions of this chapter;

(9) willfully aiding or abetting another in the violation of this chapter or any regulation or rule issued pursuant thereto;

(10) being adjudged as mentally incompetent by any court of this or any other state;

(11) failing, within a reasonable time, to provide information requested by the Commissioner of Public Safety as the result of a formal complaint to him or her that would indicate a violation of this chapter; or