"The Inter-related Dynamics of Unemployment and Low-Wage Employment", Forthcoming in Journal of Applied Econometrics.

"The other margin: do minimum wages cause working hours adjustments for low-wage workers?", Forthcoming in Economica (with J. Swaffield).

"Maximum Simulated Likelihood Estimation of Random Effects Dynamic Probit Models with Autocorrelated Errors", Stata Journal, 2006, 6(2), 256-272.

"A Comparison of Semiparametric Estimators for the Ordered Response Model", Computational Statistics and Data Analysis, 2005, 49, 555-573.

"The Impact of the Introduction of the UK Minimum Wage on the Employment Probabilities of Low Wage Workers", Journal of the European Economic Association, 2004, 2(1), 67-97.

"Semi-nonparametric Estimation of Extended Ordered Probit Models", Stata Journal, 2004, 4(1), 27-39.

"The Employment Effects of the National Minimum Wage", Economic Journal, 2004, 114(494), C110-116.

"Estimating the Impact of the Minimum Wage Using Geographical Wage Variation", Oxford Bulletin of Economics & Statistics, 2002, 64(5), 583-605.

"Using the BHPS wave 9 additional questions to evaluate the impact of the National Minimum Wage", Oxford Bulletin of Economics & Statistics, 2002, 64(5), 633-652 (with J. Swaffield).