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I am sorry to hear about this situation. It sounds like you are talking about FMLA leave.
Per Harbor Freight Lines, Inc. v. Antti, "the employer may require the completion of a medical certification, which must be deemed sufficient if it includes, in the case of intermittent leave, the dates of expected treatment, the medical necessity of intermittent leave, and the expected duration of the intermittent leave."
This means that the employer may require a medical certification. But who has licensure enough to provide this? Per FMLA, "health care provider" means physician, podiatrists, dentists, clinical psychologists, optometrists, and chiropractors (limited to treatment consisting of manual manipulation of the spine to correct a subluxation as demonstrated by X-ray to exist) authorized to practice in the State and performing with the scope of their practice as defined under State law. Added to FMLA's definition are nurse practitioners and nurse-midwives (who provide diagnosis and treatment of certain conditions.
Psychologists are not included on the list. If the employer accepts this for FMLA purposes, then there is no issue. However it is best to get the note from a physician, meaning a psychiatrist.
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