<Li> Permissive TDY (Temporary Duty), which is non-chargeable and is only used while traveling between stations while using their leave for government related purposes . Servicemembers using PTDY (Permissive TDY) are not charged while on leave but are also not granted travel pay . Permissive TDY is typically used when PCSing (Permanent Change of Station) and can be granted to a service member when looking for a place to live . Typically for only 10 days . </Li> <Li> Excess Leave (see AR 600 - 8 - 10) </Li> <P> Leave time will "roll over" from year to year . A servicemember may carry up to 60 days of leave before he or she must take it . Leave in excess of 60 days is known as "Use or Lose": if the servicemember does not use the excess leave by October 1 (the beginning of the new fiscal and training year), he or she will lose it (this was extended from 60 days to 75 from June 27, 2008 until 30 September 2015). Under certain circumstances, the use or lose threshold may be extended to 80 days, if the member is unable to take leave due to duty requirements, usually because of a deployment . If a servicemember leaves the military without having used all his or her leave time, the unused days are paid for at the member's regular rate of pay upon separation . Conversely, though the situation is less common, pay will be deducted as excess leave on separation if too many days were taken . </P> <P> Block leave refers to time when most or all of the unit takes leave at the same time (as a "block"). Commonly, block leave time is allowed during the summer and Christmas holidays, and before and after deployments . </P>

How long is emergency leave in the military