Article 312Continuation of Insurance Policies and Indemnity Bonds

All workmen's compensation insurance policies and indemnity bonds for self-insured employers existing upon the effectivity of this Code shall remain in force and effect until the expiration dates of such policies or the lapse of the period of such bonds, as the case may be, but in no case beyond December 31, 1974. Claims may be filed against the insurance carriers and/or self-insured employers for causes of action which accrued during the existence of said policies or authority to self-insure.