(a) There shall be a provision as follows:

“Notice of Claim: Written notice of claim must be given to the insurer within 20 days after the occurrence or commencement of a loss covered by the policy, or as soon thereafter as is reasonably possible. Notice given by or on behalf of the insured or the beneficiary to the insurer at (insert the location of the office which the insurer designates for the purpose), or to an authorized agent of the insurer, with information sufficient to identify the insured, shall be considered notice to the insurer.”

(b) In a policy providing a loss-of-time benefit which may be payable for at least two years, an insurer may at its option insert the following between the first and second sentences of the provision in (a) of this section:

“Subject to the qualifications set out below, if the insured suffers loss of time on account of disability for which indemnity may be payable for at least two years, the insured shall, at least once in every six months after having given notice of the claim, give to the insurer notice of continuance of the disability, except in the event of legal incapacity. The period of six months following a filing of proof by the insured or a payment by the insurer on account of the claim or a denial of liability in whole or in part by the insurer shall be excluded in applying this provision. Delay in the giving of notice shall not impair the insured's right to indemnity which would otherwise have accrued during the period of six months preceding the date on which the notice is actually given.”