The objective of granting increments to employees periodically is manifold. Firstly, an increment distinguishes the seniors from the juniors in the same cadre, motivating the senior employees by recognizing their longer length of service. Secondly, the grant of an increment ensures a definite increase in the employees' earnings. Thirdly, as it serves as a monetary motivation for sincere and blemishless service, it ensures diligent discharge of duties and well-disciplined behavior among the employees.
Now, you would have understood that the grant of a periodical increment is an objective arrangement in wage and salary administration, subject to the fulfillment of certain standards. Therefore, there could be no legal compulsion for the employer to grant an increment, nor any employment right vested in the employee to make a claim in this regard except its denial on disciplinary grounds.
Regards