Vt. Stat. tit. 21 § 697
An insurance carrier who does not intend to renew a workers' compensation insurance policy or guarantee contract covering the liability of an employer under the provisions of this chapter shall give notice of its intention to the Commissioner and the covered employer at least 45 days prior to the expiration date stated in the policy or contract. The notice shall be given to the employer by certified mail. An insurance carrier who fails to give notice shall continue the policy or contract in force beyond its expiration date for 45 days from the day the notice is received by the Commissioner and the employer. However, if, on or before the expiration of the existing insurance or guarantee contract the insurance carrier has, by delivery of a renewal contract or otherwise, offered to continue the insurance, or if the employer notifies the insurance carrier in writing that the employer does not wish the insurance continued beyond the expiration date, or if the employer complies with the provisions of section 687 of this title, then the policy will expire upon notice to the Commissioner.
21 V.S.A. § 697