Overview

Covered employers must grant an eligible employee up to a total of 12 workweeks of unpaid leave during any 12-month period for one or more of the following reasons:

* for the birth and care of the newborn child of the employee;
* for placement with the employee of a son or daughter for adoption or foster care;
* to care for an immediate family member (spouse, child, or parent) with a serious health condition; or
* to take medical leave when the employee is unable to work because of a serious health condition.
Continue Reading here:
http://www.dol.gov/esa/whd/fmla/