2008 to date, Professor of Government, School of Government , University of Tasmania.
2007 to 2008, Director, Research School of Social Sciences, Australian National University.
2006 to date, Distinguished Professor of Political Science, Research School of Social Sciences, Australian National University. Fractional appointment from February 2008.
2004 -2006, Member of the Advisory Committee of the Institute for Political and Economic Governance, University of Manchester.
2003-2006, Professor of Political Science and Head of the Political Science Program, Research School of Social Sciences, Australian National University.
2003-2004, Research Coordinator of the Australia and New Zealand School of Government (ANZSOG)
1999-2003, Adjunct Professor of Politics and Public Policy, School of Politics and Public Policy, Griffith University, Brisbane.
1998 to 2003, Adjungeret Professor of Political Science, Institut for Statskundskab, Københavns Universitet, Denmark.
1995, Jean Monnet Visiting Professor, European University Institute, Florence.
1994-1999, Director, ESRC’s Whitehall Research Programme
1994 to 2002, Professor of Politics (Research), Department of Politics, University of Newcastle-upon-Tyne.
1991, Visiting Fellow, Federalism Research Centre, Research School of the Social Sciences, Australian National University, Canberra.
1989-1994, Professor of Politics and Head of Department, University of York.
1988-89, Head of Department, Department of Government, University of Essex.
1987-89, Reader in Government, Department of Government, University of Essex.
1985-89, Visiting Professor, European Institute of Public Administration, Maastricht.
1979-87, Lecturer in Government, Department of Government, University of Essex.
1976-79, Lecturer in Administration, Department of Administration, University of Strathclyde.
1976, Visiting Lecturer, Department of Government, University of the West Indies, Jamaica.
1973-75, Visiting Fellow, Centre for Contemporary European Studies, University of Sussex.
1970-75, Lecturer in Public Administration, Institute of Local Government Studies, University of Birmingham.