Which an employer may not want to ask for or know about since family status is a protected class in some jurisdictions.
"On May 11, 2014, Governor Mark Dayton signed the Women’s Economic Security Act (WESA), which amended the prohibitions against employment discrimination in the Minnesota Human Rights Act (MHRA). Now, discrimination based on “familial status” in hiring, promotion, retention and other employment decisions is illegal in Minnesota." [1]
"On May 11, 2014, Governor Mark Dayton signed the Women’s Economic Security Act (WESA), which amended the prohibitions against employment discrimination in the Minnesota Human Rights Act (MHRA). Now, discrimination based on “familial status” in hiring, promotion, retention and other employment decisions is illegal in Minnesota." [1]
[1] http://mn.gov/mdhr/employers/familial_status.html