An employee is entitled to a total of twelve weeks of leave during any twelve-month period for one or more of the following:
a. Leave for birth of a child of the employee and in order to care for the child.
b. Leave for placement of a child with the employee for adoption or foster care.
c. Leave to care for an employee’s family member who has a serious health condition.
d. Leave because the employee has a serious health condition that makes the employee unable to perform the functions of his or her position.