Actuarial Valuation Report

Hi All,
Can some one please advise me on what this is all about
Actuarial valuation report on Gratuity and Leave.
Secondly, Is there any number constraint to open a PF account for a new company. Earlier it is said that the number of employee should be above 20. Now is there any change in the policy?
Thank you all in advance.
- Shirley

Actuarial valuation is required to put a value on the liability and expense arising due to gratuity and leave encashment benefits which are generally given to employees by the employers. Liability in respect of gratuity and LE benefits has to be disclosed in the balance sheet and expense in respect of the same needs to be recorded in P&L statement.
Actuarial valuations are required to be performed as per the requirements of Accounting Standard 15 (revised, 2005)