Visitors to Norway often remark on the number of men pushing prams around its streets. And yet Norwegian men haven’t always been so doting. Before a four-week, “use-it-or-lose it” paternal quota was introduced in 1993, under 3 percent of men took paternity leave. Now, the notion of mandatory paternal leave, sometimes called “the daddy quota,” is catching on in policymaking circles as a way to help women return to the workforce, and encourage fathers to share in caregiving and bonding during a child’s first year.