Pennycook, Matthew and Matthew Whittaker, 2012: "Low Pay Britain 2012", Resolution Foundation, September 2012. Schmitt, John, 2012: "Low wage lessons", Centre for Economic and Policy Research (CEPR), January 2012. With the use of decile ratios, the level of wage inequality within a country (i.e., the disparity between the highest earners and lowest earnings) can be assessed.