(a) On or after October 1, 1969, there is hereby provided to any state employee who is receiving a retirement allowance from the Employees' Retirement System of Alabama and who was retired prior to October 1, 1969, an increase in his maximum retirement allowance in the amount of 10 percent, excluding those whose monthly retirement allowance is as much as $400.00. Such increase shall be limited so as to provide not to exceed a maximum retirement allowance of $400.00 per month.

(b) On or after October 1, 1969, there is hereby provided to any employee who was retired prior to October 1, 1969, as an employee participating in the Employees' Retirement System of Alabama under the provisions of Section 36-27-6, an increase in his maximum retirement allowance in the amount of 10 percent, excluding those whose maximum retirement allowance is as much as $400.00 per month. Such increase shall be limited so as to provide not to exceed a maximum retirement allowance of $400.00 per month. The employer participating under said Section 36-27-6 as described in this subsection shall provide the funds necessary to pay the increase in retirement allowances as described in this subsection.

(c) The Board of Control of the Employees' Retirement System of Alabama shall determine annually the amount required to pay the cost of the increased allowances under subsection (a) of this section and shall notify the chief fiscal officer of each employer of the percentage rates of earnable compensation of the members required to be paid to the retirement system. The employer's payment on account of the increases provided in subsection (a) of this section shall be paid in the same manner and from the same source of funds as is provided in Section 36-27-24, it being the intent of the Legislature that the costs of providing the increases in subsection (a) of this section shall be distributed from all funds in proportion to the salaries paid therefrom for active members.

(d) There is hereby appropriated annually from the funds from which salaries are paid the amounts sufficient to carry out the provisions of subsection (a) of this section. In the case of those departments supported wholly by transfers from other state funds, there is hereby appropriated from the supporting funds such additional amounts as may be necessary to pay the employer contribution of each department so supported in the same proportion as the other state funds contribute to the support and maintenance of such department.

(e) The Board of Control of the Employees' Retirement System of Alabama shall determine annually the amount required to pay the cost of the increased allowances as provided under subsection (b) of this section and shall notify each employer of the amount required to be paid to the Employees' Retirement System. Such amounts shall be paid monthly or as designated by the Board of Control, to the Employees' Retirement System of Alabama by the employer providing such increases under subsection (b) of this section.

(f) The Board of Control of the Employees' Retirement System of Alabama shall administer all the benefits provided by this section under such rules and regulations as the said Board of Control may adopt, not inconsistent with this section.