The amount of pension granted under this act shall be fixed by the employer according to uniform percentages of final average salary applicable generally to all employees of such employer subject to the provisions of this act, which percentages shall be adopted by resolution and shall not exceed:
No employee shall be eligible for pension benefits based upon disability hereunder unless he shall have at least five years of employment continuously, or in the aggregate, with the employer. No employee shall be eligible for pension benefits other than benefits based upon disability hereunder unless he shall have at least 15 years of employment continuously, or in the aggregate, with the employer.
N.J.S. § 43:8B-5