OECD (1998), “The OECD Observer”, No. 213 August/September 1998, OECD Paris
OECD (2000), “Outlook”, OECD, Paris, in particular chapter 2, “Making the most of the minimum: statutory minimum wages, employment and poverty”
OECD (2003), “Policy Brief: Disability programmes in need of reform”, OECD Observer, March
Oers, F.M., R. A. de Mooij, J. J. Graafland and J. Boone (1999), “An Earned Income Tax Credit in the Netherlands: Simulations with the MIMIC model”, Research Memorandum 150, Central Planning Bureau, The Hague
Okroi, L.J (1988), “Galbraith, Harrington, Heilbroner”, Princeton
Okun, A. (1975), “Equality and efficiency”, Brookings
Okun, A. (1981), “Prices & Quantities”, Blackwell
Okun, A. (1983), “The economist and presidential leadership”, reproduced in Pechman (1983) p579-583
Opstal, R. van (1990), “Minimumloon en werkloosheid; een empirische analyse of micro-data uit 1979 en 1985”, Research memorandum 69, Centraal Planbureau
Ormerod, P. (1994), “The death of economics”, Faber & Faber