For instance, Koeniger etal. ( Labour market regulations can give rise to inequality due to the labour market rigidity they foster. As Rama (2003) pointed out, countries may push to adopt ILO labour standards, raise the minimum wage or expand government employment, but all this may not have any significant effect on inequality. Based on the data from 121 countries from 1945 to 1999, Calderon et al. ( Firstly, data limitations create difficulties with respect to the measurement of inequality and regulations. Secondly, most labour market institutions have only been set up over a relatively short time, so it is difficult to observe any impact they might have had on inequality at this time.