Your employer may use the WHD prototype forms or create their own version of the forms containing the same basic information. However, an employer that requests a medical certification may request only information that relates to the serious health condition for which the current need for leave exists, and no information may be required beyond that specified in the FMLA regulations. See 29 CFR 825.306, 29 CFR 825.307, and 29 CFR 825.308.