Mass. Gen. Laws ch. 32, § 21
(3) Duties of the Actuary. — The commission or his actuary or other agent with his approval shall be the technical advisor of the board of each such system in matters relating to the applicable provisions of this chapter, and in matters relating to the operation of the system, and shall perform such actuarial duties as are required in connection therewith, including, but not limited to:—
(f) the preparation and filing with the general court, of a report, annually, in the month of January, on the computation of any increase in the United States Consumer Price Index and the percentage thereof in the previous year by the Commissioner of Social Security, including a statement that such increase in said Consumer Price Index during the last previous year requires a cost of living increase in the retirement allowances, pensions or annuities of eligible members, as defined in sections 102 and 103, equal to the percentage increase in the Consumer Price Index or 3 per cent, whichever is less.
An actuarial valuation of each system shall be conducted biennially and experience investigations shall be conducted every 6 years. Actuarial valuation reports and experience studies shall be conducted in such manner as the commissioner of administration, upon advice of the actuary, shall consider appropriate.
(6) Public Employee Retirement and Disability Data System. — The public employee retirement administration commission shall establish and maintain a comprehensive system of data relative to the contributory retirement and disability systems. The data system shall include sufficient information:—
(e) to calculate and record assessments on each retirement system by the division of public employee retirement administration.
Each board shall provide the commission with such information as the commission deems necessary to establish and maintain the data system. The executive head of each governmental unit of the head of each department shall provide the commission each year with such employment and occupational information as he deems necessary to establish and maintain the data system, in such form as he requires.
The commission shall make any information or data collected pursuant to this section available to the retirement law commission upon request of said commission.