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.

We test core theories of the household using variants of a public good game and experimental data from 240 couples in rural Uganda. Spouses do not maximise surplus from cooperation and realise a greater surplus when women are in charge. This violates assumptions of unitary and cooperative...