In Uttar Pradesh, teams of four are engaged to dig soil under the NREGA programme. In one treatment spouses work together; in the other treatment they work in separate teams. Working with spouses is associated with significantly higher output.

An important question in labour economics is whether the presence in a work environment of friends or relations lowers or raises productivity. We examine the question using evidence from a simple field experiment in Uttar Pradesh, India with married wives and husbands. Teams of four are engaged...