From what you intend to know, I think that two positions will clarify the doubts in your mind. One is the legal position with regard to your right to incentives, and the other is the ideal position.
Legal Position
The legal position is that you have no right to claim anything beyond the minimum wages under the law if you come under the purview of the Minimum Wages Act (which covers skilled and technical employees) or the wages that were contracted by the employer to pay you for the work performed. If your contract contains any clause relating to the payment of incentives for extra work or targets achieved, and you have fulfilled them, you will become entitled to such incentives as per the terms of the contract. Otherwise, you have no right to any incentives.
Ideal Position
The ideal position is that the employer shall pay incentives as a token of reward and recognition for any good work done by the employees to motivate them, apart from reimbursing traveling expenses. Therefore, it depends upon the goodwill of the employer.
Regards,
B. Saikumar
HR & Labour Law Advisor
Mumbai