We use a nonparametric approach to analyze the changes in the productivity distribution of the Korean companies for 16 years (1990-2005). The static efficiency indexes in the given years are measured by data envelopment analysis and dynamic indexes between years through tripartite decomposition (efficiency, technology and capital). Moreover, we analyze the kernel-based estimate of a density function and polarization phenomenon on the distribution changes of the labor productivity. Therefore, we find that (i) the efficiency index shows the decreasing trend all years except in 1999. (ii) Total changes of labor productivity for 16 years (1990-2005) mainly result from the effects of the pair pulling of technological progress and capital accumulation. (iii) The main variables from which the polarization of labor productivity has make worse are the efficiency in the prior to financial crisis and the technological change in the post.