Leave is a provision to stay away from work for genuine reasons with prior approval of the authorities. It may be granted for a casual purpose or a planned activity, on medical grounds or in extra-ordinary conditions. Leave cannot be claimed as a matter of right. Accordingly, leave rules and norms have been categorized under various heads. Vacation and leave are governed by a set of rules and norms as laid down by the Government of India. The following leave rules and norms give details about the different types of leave and how they can be availed of. Certain rules are common to both faculty and non-faculty of the Institute. Certain rules and norms have been stipulated specifically with reference to faculty of the Institute. These rules should be used for the better understanding and utilization of the leave rules and norms and are only complementary and explanatory in nature.