PF & ESI Proration on LOP

Dear Experts ,

I have read almost all threads but did not get any specif thread relating to my requirement. hence need your help once again.

We maintain PF Basis in IT 587 , there fore , if an EE has Basic :10000 , VDA : 2000 and DA : 700,  PF will be calculated 12% on this total

i.e 12700 * 12%  = 1500 

There fore, if EE takes LWP for one day , then PF shud be calculated on the reduced value of these 3 components i.e 12700 / 26* 1(LWP) = 489

12700 - 489 =   12211  hence PF shud be on 12211

Same funda applies to ESI too .. however ESI has some more allowance in its calculations .

I dont think so , User EXit is the solution , coz it is only for pension , that is what most of you have mentioned .

Please help its urgent ,

Thanks in Advance

Arun