Conn. Agencies Regs. § 31-51rr-25
(a) (1) In the absence of an established employer policy providing a longer grace period, an employer's obligations to maintain health insurance coverage cease under FMLA if an employee's premium payment is more than thirty (30) days late. In order to drop the coverage for an employee whose premium payment is late, the employer must provide written notice to the employee that the payment has not been received. Such notice must be mailed to the employee at least fifteen (15) days before coverage is to cease, advising that coverage will be dropped on a specified date at least fifteen (15) days after the date of the letter unless the payment has been received by that date. If the employer has established policies regarding other forms of unpaid leave that provide for the employer to cease coverage retroactively to the date the unpaid premium payment was due, the employer may drop the employee from coverage retroactively in accordance with that policy, provided the fifteen (15)-day notice was given. In the absence of such a policy, coverage for the employee may be terminated at the end of the thirty (30)-day grace period, where the required fifteen (15)-day notice has been provided.
(Effective May 12, 2014)