@Bablu Paul,
This shows the Gross Salary is 40K out of which your Basic Salary is 20 K. Actually the exemption limit is 15 K (Basic), Now one can opt-out for no deduction. But if you want to contribute following is the rule.
Employer contribution to EPF: 3.67% of salary. (PF Fund)
Employer contribution to EPS: 8.33% of salary (Pension Fund)
Subject to a ceiling of Rs. 15K salary, i.e. Rs. 1,250. Please note that you can do the full deduction on 20k which is Rs. 1666.
Hope this will clear your doubts.