4-Month Rule
The 365 days of continued enrollment during leave without pay status is not considered to be broken by any period(s) in pay status of less than 4 consecutive months. If you are in leave without pay status and return to pay status for less than 4 consecutive months, then return to leave without pay status, you do not begin a new 365-day period of continued enrollment. Instead, the second (and any other) period in leave without pay status is treated as continuation of the first. If you are in a pay status during any part of a pay period, the entire pay period is not counted toward the 365-day limit.
If you return to pay status for at least 4 consecutive months during which you are paid for at least part of each pay period, you are entitled to begin a new 365-day period of continued enrollment while in leave without pay status.