By Shri J C Nagaraja Rao, Dy.CPO (Retd.)/SCR
Substantive pay means the pay (other than special pay, personal pay or emoluments classified as pay) to which a Railway servant is entitled on account of his appointed to a post substantively or by reason of his substantive position in a cadre.
Officiating pay means the difference between the pay that a Railway servant is entitled to draw by virtue of his being put to officiate in a post on which another person holds a lien and his Substantive pay.
Mr A is appointed as Junior clerk (substantive post) and his pay fixed as Rs.25000. He is promoted as senior clerk on adhoc promotion and pay fixed as Rs.30000. Hence his substantive pay is Rs.25000 and officiating pay is Rs.5000.