Dear Anonymous,
Typically, employers can require proof from your health care providers for FMLA leave. Here is a list of frequently asked questions provided by the US Dept. of Labor regarding FMLA. If you have specific questions about your leave you should talk to an Employment Attorney who practices in the area of Employee Benefits and FMLA.
Chip Clark
Answered on Jul 27th, 2015 at 12:49 PM