(1)(a) An employee must provide the employer at least thirty days' written notice before paid family or medical leave is to begin if the need for the leave is foreseeable based on an expected birth, placement of a child, or planned medical treatment for a serious health condition.

(b) An employee must provide the employer written notice as soon as is practicable when thirty days' notice is not possible, such as because of a lack of knowledge of approximately when leave will be required to begin, a change in circumstances, or a medical emergency.

(2) An employee must provide the employer written notice as soon as is practicable for foreseeable leave due to a qualifying military exigency, regardless of how far in advance such leave is foreseeable.

(3) Whether paid family or medical leave is to be continuous or is to be taken intermittently or on a reduced schedule basis, written notice need only be given one time, but the employee must inform the employer as soon as is practicable if dates of the scheduled leave change, are extended, or were initially unknown.