Dear Neeraj,
What exactly is the misconduct done by the contract employee? "Creating issues in the plant" is a vague term and does not explicitly describe the nature of the misconduct.
Do you have approved standing orders for your company? If yes, then you may check the list of the misconducts mentioned in the orders and find out under what misconduct the contract employee is liable for the disciplinary action. If your company does not have approved standing orders, then you may refer to the model standing orders, and issue the show-cause notice.
In fact, terminating the services of the contract employee is easy as all that is required is to send a letter to the contractor stating your company does not wish to avail of the service of the particular employee. However, as this contract employee appears to be a troublemaker, you may follow a process of handling the indiscipline.
Thanks,
Dinesh Divekar