Sir give a notice to your company for increasing your salary. If they fail then you can tender resignation as no such specific rules for private sector hike is made.

Have you signed any written contract with the company and if so, what does it say regarding increment.

it is at discretion of company to increase your salary 

you cannot claim salary increase as matter of right 

it would be better if you raise this matter internally with company at higher level but since you asked legally, you can file an application before authority under payment of wages Act at your concerned district, but this could have its repercussions from management of your company. so do it on your on risk and perils.

Kindly illustrate the situation.

If there is violation of some statutory right then you may approach the labor court. 

Regards  

You must visit your employment offer letter conditions in this regard.

If the company's act is unjustified and illegal you may first approach the top management of the company with a representation in writing in this regard and after this remedy is exhausted you may adopt legal process to get relief and remedy.

Your employer has the final say in deciding whether to hike the salary or not. No court can direct a private employer to hike the salary of its employees.

Hi, it is advisable to file a complaint for compensation before the labour forum Gurgaon 

private organizations have their own rules and they should abide by the rules. if you have a salary hike due as per the norms they should give it to you. having "salary is already above market average" is no ground for denying the hike. you can approach the labor court.

regards

1) This is not valid reason you need to check increment criteria in the employer-employee agreement.

Since It is private company and you also must have signed the agreemet of the company, so you can not legally demand salary hike. Better Talk to HR manager and bring the notice of top management about your grievances.

Best way to look for alternate company, if you really feel you are being paid low compared to market.

All the Best

Appears this is a private company. You are advised to resolve this internally instead of taking any legal steps against them.

Please go through your terms and conditions of appointment letter then go further.