1-52 29 CFR § 825.302—Regulation. Employee Notice Requirements for Foreseeable FMLA Leave
(a) Timing of notice. An employee must provide the employer at least 30 days advance notice before FMLA leave is to begin if the need for the leave is foreseeable based on an expected birth, placement for adoption or foster care, planned medical treatment for a serious health condition of the employee or of a family member, or the planned medical treatment for a serious injury or illness of a covered service member. If 30 days' notice is not practicable, 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, notice must be given as soon as practicable. For example, an employee's health condition may require leave to commence earlier than anticipated before the birth of a child. Similarly, little opportunity for notice may be given before placement for adoption. For foreseeable leave due to a qualifying exigency notice must be provided as soon as practicable, regardless of how far in advance such leave is foreseeable. Whether FMLA leave is to be continuous or is to be taken intermittently or on a reduced schedule basis, notice need only be given one time, but the employee shall advise the employer as soon as practicable if dates of scheduled leave change or are extended, or were initially unknown. In those cases where the employee is required to provide at least 30 days' notice of foreseeable leave and does not do so, the employee shall explain the reasons why such notice was not practicable upon a request from the employer for such information.
(b) As soon as practicable means as soon as both possible and practical, taking into account all of the facts and circumstances in the individual case. When an employee becomes aware of a need for FMLA leave less than 30 days in advance, it should be practicable for the employee to provide notice of the need for leave either the same day or the next business day. In all cases, however, the determination of when an employee could practicably provide notice must take into account the individual facts and circumstances.
(c) Content of notice. An employee shall provide at least verbal notice sufficient to make the employer aware that the employee needs FMLA-qualifying leave, and the anticipated timing and duration of the leave. Depending on the situation, such information may include that a condition renders the employee unable to perform the functions of the job; that the employee is pregnant or has been hospitalized overnight; whether the employee or the employee's family member is under the continuing care of a health care provider; if the leave is due to a qualifying exigency, that a covered military member is on active duty or call to active duty status, and that the requested leave is for one of the reasons listed in § 825.126(a); if the leave is for a family member, that the condition renders the family member unable to...