PRESUMPTIVE PAY:
Presumptive pay of a post, when used with reference to any particular Government servant, means the pay to which he would be entitled if he held the post substantively and were performing its duties; but it does not include special pay unless the Government servant performs or discharges the work or responsibility, in consideration of which the special pay was sanctioned. For example, an Assistant appointed as Research Assistant on deputation basis opts of his own grade pay plus deputation (duty) allowance. He will thus, draw presumptive pay of Assistant plus deputation allowance at prescribed percentage on it.