71. May I take paid sick leave to care for a child other than my child?
It depends. The paid sick leave that is provided under the FFCRA to care for one (or more) of your children when their place of care is closed (or child care provider is unavailable), due to COVID-19 related reasons, may only be taken to care for your own “son or daughter.” For an explanation of the definition of “son or daughter” for purposes of the FFCRA, please refer to Question 40.
However, paid sick leave is also available to care for an individual who is subject to a Federal, State, or local quarantine or isolation order related to COVID-19 or has been advised by a health care provider to self-quarantine due to concerns related to COVID-19. If you have a need to care for a child who meets these criteria, you may take paid sick leave if you are unable to work or telework as a result of providing care. But in no event may your total paid sick leave exceed two weeks.
Please see the info below from the DOL's website on the definition of a Son or Daughter. Please Disseminate.
40. Who is a son or daughter?
Under the FFCRA, a “son or daughter” is your own child, which includes your biological, adopted, or foster child, your stepchild, a legal ward, or a child for whom you are standing in loco parentis—someone with day-to-day responsibilities to care for or financially support a child. For additional information about in loco parentis, see Fact Sheet #28B: Family and Medical Leave Act (FMLA) leave for birth, placement, bonding or to care for a child with a serious health condition on the basis of an “in loco parentis” relationship.
In light of Congressional direction to interpret definitions consistently, WHD clarifies that under the FFCRA a “son or daughter” is also an adult son or daughter (i.e., one who is 18 years of age or older), who (1) has a mental or physical disability, and (2) is incapable of self-care because of that disability. For additional information on requirements relating to an adult son or daughter, see Fact Sheet #28K and/or call our toll free information and help line available 8 am–5 pm in your time zone, 1-866-4US-WAGE (1-866-487-9243).
And this is from FLMA material:
A “son or daughter” is defined by the FMLA regulations as a biological, adopted, or foster child, a stepchild, a legal ward, or a child of a person standing in loco parentis who is either under 18 years of age or is 18 years of age or older and “incapable of self-care because of a mental or physical disability” at the time FMLA leave is to commence.
The FMLA regulations provide separate definitions of “son or daughter” for its military family leave provisions that are not restricted by age.
Wage and Hour Administrator’s Interpretation No. 2010-3 (June 22, 2010) provides additional information regarding the definition of a son or daughter as it applies to an employee standing in loco parentis.