Dear Hr-Freshers-Academy,
I started writing response you your query but in the mean time our learned member V K Rao has given you the answer to the point understandable by freshers.
But always there is different view in law.
The D.A /FDA /VDA is an increase to compensate the cost of living index, so I will say that, I should get the incremental value due to increase in cost of living index. Many employees, I have seen, by way of collective bargaining gets this incremental value, convincing the employer their point of view.
But the answer to your question for fresher academy is well answered by V K Rao to the point. Employee is not entitled to get less than minimum wage rate as applicable to his category in the schedule industry and zone, he is in.