26 C. We may terminate an Employer’s coverage on any premium due date by giving the Employer not less than 31 days advance notice. An Employer may terminate coverage under the Group Policy in whole, and may terminate insurance for any class or group of Eligible Persons, at any time by giving us advanced written notice at least 31 days prior to such termination. Insurance will terminate automatically for nonpayment of premium. D. Benefits are limited to the terms of your Employer’s coverage under the Group Policy, including any valid amendments. No change or amendment of your Employer’s coverage will be valid unless it is approved in writing by one of our executive officers and delivered to your Employer. The Policyowner, your Employer and their respective employees or representatives have no right or authority to change or amend the Group Policy or your Employer’s coverage under the Group Policy or to waive any terms or provisions thereof without our signed, written approval. GLDI-C3300-(12/06) XXVIII. COST OF LIVING ADJUSTMENT (COLA) BENEFIT A. You are eligible for a COLA Benefit if you are receiving LTD Benefits under the Group Policy, and, as of March 1st, have received 12 months of paid LTD Benefits. B. On each March 1st on which you are eligible for the COLA Benefit, your COLA Benefit will be determined by multiplying your LTD Benefit by the COLA Factor for that year as determined below. C. Determining your COLA Factor: 1. On the first March 1st on which you are eligible for the COLA Benefit, your COLA Factor means the percentage rate of increase, expressed as a decimal, in the CPI-W as published by the U.S. Department of Labor for the prior calendar year, plus one. 2. Each subsequent March 1st on which you are eligible for the COLA Benefit, your COLA Factor for determining the COLA Benefit for the year beginning on that March 1st will be the COLA Factor as determined for the then current year using the method in paragraph 1 above, multiplied by all of the COLA Factors determined for previous years in which you were eligible for the COLA Benefit, rounded to four decimal places. D. If the rate of the CPI-W decreases, your LTD Benefit may reduce accordingly; however, such adjustments will never reduce your LTD Benefit below the amount which would be payable if this COLA Benefit did not exist. E. A COLA Benefit will not be payable during a period of employment under a Rehabilitation Plan. F. In no event will the combined LTD Benefit and COLA Benefit exceed the Maximum Monthly Benefit. G. The COLA Benefit will apply only to LTD Benefits for which you are eligible. If you receive retroactive benefits from any Deductible Income source for periods of time during which we paid a COLA Benefit to you, such COLA payments must be reimbursed to us pursuant to the “Right to Reimbursement” section of the Group Policy. H. This COLA Benefit will not apply if your LTD Benefit equals the Minimum Monthly Benefit. GLDI-C5400-(12/06)