(a) In addition to the compensation provided for by Kan. Stat. Ann. §§ 46-137a and 75-3212, and amendments thereto, and any other statute, and except as otherwise provided by subsection (b):

(1) The president of the senate and the speaker of the house of representatives shall each receive an allowance at a biweekly pay rate of $539.97 during their terms of office as speaker and president, which compensation shall be for additional services performed in connection with discharging the duties assigned to the respective positions;

(2) the speaker pro tem of the house of representatives, the vice president of the senate, the assistant majority leaders of the senate and house of representatives and the assistant minority leaders of the senate and house of representatives shall each receive an allowance at a biweekly pay rate of $275.59 during their respective terms of office which compensation shall be for additional services performed in connection with discharging the duties assigned to the respective positions;

(3) the chairperson of the senate committee on ways and means and the chairperson of the house committee on appropriations shall each receive an allowance at a biweekly pay rate of $434.23 during their respective terms of office, which compensation shall be for additional services performed in connection with discharging the duties assigned to the respective positions; and

(4) the majority and minority leaders of the senate and the house of representatives shall each receive an allowance at a biweekly pay rate of $487.14 during their respective terms of office, which compensation shall be for additional services performed in connection with discharging the duties assigned to the respective positions.

(b) Whenever the rates of compensation of the pay plan for persons in the classified service under the Kansas civil service act are increased for payroll periods chargeable to fiscal years commencing after June 30, 2009, the biweekly pay rate of officers of the legislature specified in subsection (a) shall be increased on the effective date of any such pay plan increase by an amount computed by multiplying the average of the percentage increases in all steps of such pay plan by the biweekly pay rate of such officers which is being received as provided by law and which is in effect prior to the effective date of such pay plan increase.