Somewhat surprisingly, cross-country empirical evidence (at least in the cross section) does not seem to support the predictions of standard models that economies with stricter regulations on hiring and firing should have a lower pace of job reallocation. One problem in exploring these issues empirically has been the difficulty of comparing countries on the basis of harmonized measures of job reallocation. A related problem is that there may be unobserved measurement errors or other factors accounting for differences in job reallocation across countries.