Dear Rajesh,
A simple, plain answer to your query is that your friend can avail leave encashment to the extent permitted by the company's Corporate HR policy only. However, while going through your statement/question, I have observed that your question has not shed light on the following key areas:
1) Is your friend working in a factory covered under the Factories Act or a commercial establishment governed by the Shops and Commercial Establishments (S&CE) Act of the respective state?
2) In case he/she is working in a commercial establishment situated in a state where there are more favorable or unfavorable terms embedded in the S&CE Act of the concerned state, and assuming there are no certified standing orders in the company approved by the appropriate government, the approach to the issue at hand may vary.
3) To address the query with legal precision, it's essential to clarify the dual wording you have used - "Accumulated/Carried forward." For example, one may accumulate up to sixty days from one perspective, while from another viewpoint, one may interpret it as carry forward being permitted for only up to sixty days. As HR professionals, we cannot use terms like this assuming layman's understanding. From my perspective, I would interpret it as after surpassing 3 or 4 years, an individual shall be allowed to carry forward only sixty days, not 90 or 120, which is the total entitlement.
4) Finally, why has he accumulated so many days? Is it due to service exigencies, and the management did not approve leave beyond a certain number of days?
Please let me know if you require any further clarification or information.
Thank you.
Sincerely