University of Oregon's Lundquist College of Business and his co-authors compared the effective tax rates paid by a sample of American firms between 2002 and 2011 with a measure of those companies' CSR programmes compiled by MSCI, an index provider. It found that the companies which do the most CSR also make the most strenuous efforts to avoid paying tax and that those with a high CSR score also spend more lobbying on tax. The most obvious explanation for this inverse relationship is hypocrisy. Surely CSR depends on the idea that firms have an obligation to society, not just to shareholders? And surely the most basic obligation to society is to pay the taxes that support the poor and vulnerable? An other explanation is that firms are not monoliths but collections of rival fiefs with different priorities. The department that oversees the CSR programmes, and thus has an interest in boosting their budgets, may never talk to those in the finance department who are paid to minimise the tax bill.