Dear Ratika,
The status regarding the contractual employee for PF-ESI depends upon the nature of the job, appointment letter, salary structure, and ethics of your company. If you really want to cover the employee under PF-ESI, you can do so as per compliance.
However, if the specific employee is on higher remuneration/salary, you can exclude him from PF and ESI. In that case, you have to come to an agreement with him that you are hiring him for some professional services. The agreement should have a valid period, amount (monthly/annual), payment terms, specific nature of the job, termination clause, and other legal clauses. In that case, the person will be treated as a "Contractor" in your company. For his services, he will raise an invoice (monthly) for the agreed amount. You have to process the bill to the accounts department like a vendor/contractor bill, and accordingly, payment will be released.
The major difficulty for you and him will be that "you have to deduct TDS from his payment as per government norms."
After the closing of the financial year, he can claim a refund of the TDS through ITR. If his remuneration is under the tax-free slab, he will get a full refund. However, if his remuneration exceeds the tax-free limit, the refund can be claimed after necessary tax deductions from the total TDS amount.
I hope that the matter is now clear to you.