This document summarizes revised leave rules from 1980 that cover earned leave and casual leave for civil servants in Pakistan. It outlines various types of leave including earned leave, casual leave, leave on full pay, leave on half pay, extraordinary leave, maternity leave, disability leave, and study leave. For each type of leave, it specifies the maximum period allowed, whether it is deducted from the leave account, and the applicable leave salary. It also describes rules regarding when leave is earned, refusal of leave on medical grounds, and encashment of leave upon retirement.