The post adjustment system (PAS) is an integral part of the set of rules and procedures governing the remuneration of officials of the United Nations (UN) common system which is established by the General Assembly on the recommendation of International Civil Service Commission (ICSC). It rests on two pillars:

1. A statistical methodology for calculating the post adjustment index (PAI); and
2. A set of operational rules that are set by the ICSC to convert the PAI into post adjustment multipliers that determine salary levels.

This document is a synopsis of the PAS, providing details on both the Commission-approved statistical methodology for compilation of the PAI, and the operational rules for determination of the post adjustment multiplier (PAM).

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Source: ICSC