(b) No corporation subject to the provisions of this article shall hereafter enter into any agreement, directly or indirectly, with an officer, director or salaried employee of such corporation whereby it agrees that for any services rendered or to be rendered he shall receive any salary, compensation or emolument that will extend beyond a period of thirty-six months from the date of such agreement, except that payment of an amount not in excess of twenty percent for the years nineteen hundred eighty-five and nineteen hundred eighty-six and thirty-three and one-third percent for the year nineteen hundred eighty-seven and thereafter of the salary or other compensation of any of its officers or employees, other than a mechanic, workingman or laborer, may by written contract be deferred beyond such period of thirty-six months, which contract may include conditions to be met by such officer or employee before payment will be made. No such corporation shall grant any pension to any officer, director or trustee thereof or to any member of his family after death, except that such corporation may, in pursuance of the terms of a retirement plan adopted by the board of directors of such corporation and approved by the superintendent, provide for any person who is a salaried officer or employee of such corporation, a pension payable at the time of his retirement by reason of age or disability, and also life insurance benefits payable at his death.