§ 115. Policy of the state. In order to attract unusual merit and ability to the service of the state of New York, to stimulate higher efficiency among the personnel, to provide skilled leadership in administrative departments, to reward merit and to insure to the people and the taxpayers of the state of New York the highest return in services for the necessary costs of government, it is hereby declared to be the policy of the state to provide equal pay for equal work, and regular increases in pay in proper proportion to increase of ability, increase of output and increase of quality of work demonstrated in service.