With the bare details provided in the query, it is not possible to offer clear advice. It is not clear whether you were in the workman cadre or supervisory/executive category, the nature of work done, the salary amount, and how many months/days of salary are pending. Additionally, it is unclear whether you had approached the employer in the past and the response it elicited.
Yet, it is evident that the employer is not interested in paying you. Since it has been 10 months, you may have to resort to legal means to enforce your claim. Therefore, it is advisable to approach a legal professional.