(a) For policies with rating anniversary dates after September thirtieth, nineteen hundred ninety-nine and before October first, two thousand, an employer's payroll for premium computation purposes in the affected construction classifications shall be the actual weekly payroll per employee for the number of weeks employed subject to a maximum of nine hundred dollars per week per employee plus one-half of the difference between the employer's total payroll and the limited payroll.

(b) For policies with rating anniversary dates after September thirtieth, two thousand and before October first, two thousand one, an employer's payroll for premium computation purposes in the affected construction classifications shall be the actual weekly payroll per employee for the number of weeks employed subject to a maximum of nine hundred dollars per week per employee.

(c) For policies with rating anniversary dates after September thirtieth, two thousand one and before October first, two thousand two, an employer's payroll for premium computation purposes in the affected construction classifications shall be the actual weekly payroll per employee for the number of weeks employed subject to a maximum of eight hundred dollars per week per employee.

(d) For policies with rating anniversary dates after September thirtieth, two thousand two, an employer's payroll for premium computation purposes in the affected construction classifications shall be the actual weekly payroll per employee for the number of weeks employed subject to a maximum of the greater of seven hundred fifty dollars per week or the weekly payroll amount upon which the maximum weekly benefit is based, per employee. 3. The base rates applicable to construction classifications as defined in this subdivision shall be adjusted by the New York workers' compensation rating board beginning October first, nineteen hundred ninety-nine, to reflect the payroll limitations required by this subdivision as they separately affect such rates for work actually performed within each of the following geographic territories:

(a) Territory 1 comprising the counties of the Bronx, Kings, New York, Queens, and Richmond;

(b) Territory 2 comprising the counties of Dutchess, Nassau, Orange, Putnam, Rockland, Suffolk and Westchester; and

(c) Territory 3 comprising all other counties within the state.