Employee life insurance is hereby declared to be that plan of life insurance other than salary savings life insurance under which individual policies are issued to the employees of any employer where such policies are issued on the life of more than one employee at date of issue. Premiums for such policies shall be paid by the employer or the trustee of a fund established by the employer either wholly from the employer’s funds, or funds contributed by him, or partly from such funds and partly from funds contributed by the insured employees. (1947, c. 721; 1957, c. 1008.)