Does your sick leave policy include time off to care for roommates, best friends or chosen siblings? Over 60% of people under the age of 25 live in non-family households , and 28% of all adults live alone in the U.S. It is a distinct turn from historical numbers and the persistent, politicized ideal of the two-parent nuclear family. Workplaces and governments are beginning to broaden the definition of family to include non-biological relationships in their sick-leave protocol .