Perquisite

Dear friends,

I am working in a Central Public Sector Corporation,

My Salary includes

Basic,dearness Pay(DP),Central Dearness Alowance(CDA),Incentive(Not fixed),Field Compensatory.

We are given Leave encashment in service period also,aprt from this Exgratia is given in once in a year.we are provided with quarters for which nominal license fee is there.

can any body tell on what parts of salary perquisite on accommodation is to be paid?any circular in thios regard?