Leisure is defined as all non-working hours ("non-market time" in the paper). Household chores, taking care of kids, etc. is all considered leisure hour activit

Leisure is defined as all non-working hours ("non-market time" in the paper). Household chores, taking care of kids, etc. is all considered leisure hour activity in economic data. In this analysis, the researchers include 7 hours per day to sleeping/eating: "We include a sub-set of time spent on eating, sleeping, and personal care (ESP) in leisure. In particular, we treat 7 hours per day as non-discretionary ESP, and the residual as leisure." So they're really looking at the breakdown between labor and everything else in an average 17 hour day. http://glossary.econguru.com/economic-term/leisure http://glossary.econguru.com/economic-term/leisure