It would have been better had you stated the type of the firm, like a factory, shop, or other kind of establishment, and the position of your employment, such as workman, clerk, supervisor, or manager. Besides, the action of the labor officer, in the face of the employer's non-cooperation for any kind of settlement, depends on the type of your complaint; i.e., if it is a mere complaint for terminal benefits, you would be advised to approach the appropriate forum for recovery.
Dispute Against Termination
If it is a dispute against your termination and if you were a workman, you would be given a conciliation failure certificate with which you have to file a further dispute for adjudication before the Labor Court for the area.
Final Settlement of Terminal Benefits
If you want only the final settlement of your terminal benefits, the forum for recovery of gratuity, if applicable, is the Controlling Authority under the Payment of Gratuity Act, 1972, who would normally be an Asst. Commissioner of Labor. For other dues like leave encashment, pending salary, etc., you should file an application under section 33-C(2) of the ID Act, 1947, in the Labor Court.
Non-Workman Employees
In case you were not a workman, you have to institute a Civil Suit for recovery of all dues other than statutory gratuity.