What is the biblical basis for women, particularly mothers, working outside of the home?

I'm wondering about the sinfulness of women, particularly mothers, working outside the home. Perhaps 1 Timothy 5:8 could be understood to mean that only the husband is to provide for the family: > Anyone who does not provide for their relatives, and especially for their own household, has denied the faith and is worse than an unbeliever. > > [1 Timothy 5:8 NIV](http://www.biblegateway.com/passage/?search=1%20Timothy%205:8&version=NIV) What is the biblical basis for a woman, particularly a mother, working outside the home?