; (B) in a case in which the need for such period of time is foreseeable at least 7 days in advance of such period, be provided at least 7 days in advance of such period; and (C) otherwise, be provided as soon as practicable after the employee is aware of the need for such period. (2) Certification in general (A) Provision (i) In general Subject to subparagraph (C), an employer may require that a request for paid sick time under this section for a purpose described in paragraph (1), (2), or (3) of subsection (b) be supported by a certification issued by the health care provider of the eligible employee or of an individual described in subsection (b)(3), as appropriate, if the period of such time covers more than 3 consecutive workdays. (ii) Timeliness The employee shall provide a copy of such certification to the employer in a timely manner, not later than 30 days after the first day of the period of time. The employer shall not delay the commencement of the period of time on the basis that the employer has not yet received the certification. (B) Sufficient certification (i) In general A certification provided under subparagraph (A) shall be sufficient if it states— (I) the date on which the period of time will be needed; (II) the probable duration of the period of time; (III) the appropriate medical facts within the knowledge of the health care provider regarding the condition involved, subject to clause (ii); and (IV) (aa) for purposes of paid sick time under subsection (b)(1), a statement that absence from work is medically necessary; (bb) for purposes of such time under subsection (b)(2), the dates on which testing for a medical diagnosis or care is expected to be given and the duration of such testing or care