Chelmsford, Mass. -- A report released Thursday by Kronos Inc. found that hiring in the retail sector continues to make marked improvements. The Kronos Retail Labor Index, which analyzes the current state of the demand and supply sides of the labor market within the U.S. retail sector, rose to 4.2% in November 2011, from a downwardly revised 3.5% in October. This was the highest reading since October 2008 and the second reading of 4% or higher in the last three months.