Dear Dominic,
You need to ensure that these basic components are part of the salary like Basic, HRA(50% of Basic), Conveyance, CCA, LTA, Education(200 pm) and Medical Allowance(1250 pm.). Conveyance if I am right 800 pm. is exempt.
Rest shall be PF(12% on basic) and gratuity(5% on basic)
Rgds,
Divya