초기업단위 교섭과 임금불평등

Since the late 1990s, the Korean labor movement has attempted to shift from a enterprise union to an industrial union, and has achieved certain results, at least in terms of organizational structure. The practice of industrial collective bargaining was accumulated in the union sector of the metal and health industry. However, no research has been conducted on the effect of multi-employer bargaining on wage inequality due to the absence of appropriate data. This paper attempted an empirical analysis of that problem by constructing establishment-worker linkage panel data from 2014 to 2019 by linking the workplace panel survey and employment insurance administrative data. As a result of estimating the wage effect of multi-employer bargaining using the unconditional quantile regression model, multi-employer bargaining significantly increase the wages of workers in the low-wage quintile and significantly lowers the wages of workers in the high-wage quintile compared to enterprise-level bargaining in the long run. As a result of estimating the effect of bargaining scope on wage inequality within a establishment using a fixed effect model, any form of bargaining compared to no bargaining lowered the Palma ratio and the p90/p10 quantile statistically significantly, and the effect was higher in multi-employer bargaining than enterprise-level bargaining. The above empirical analysis results imply that Multi-employer bargaining and the expansion of the scope of bargaining are statistically related to lowering wage inequality in the union sector and within individual establishments. In the future, policy efforts are required to institutionalize the Multi-employer bargaining.