What are the Constraints on the Pursuit of Keynesian Macroeconomic Policies?

Amongst his many contributions to economic theory and policy, Geoff Harcourt has recently put forward a range of proposals seeking to secure full employment. In this chapter, the intention is to explore the constraints on the use of Keynesian policies for that purpose, and specifically focus on the constraints posed by the supply-side and the financial markets. In doing so, Geoff s recent concerns over the constraints posed by unregulated financial markets come to the fore. ¹