This paper analyses the relationship between wage dispersion and firm size within a “two-tier” system of collective bargaining (firm bargaining and multi-employer bargaining levels). Collective bargaining has a decisive role in setting wages in Spain, and its regulation highly limits the possibility for smaller firms to negotiate their own collective agreement.,Based on the Spanish Structure of Earnings Survey 2006, 2010 and 2014, the authors use variance decomposition in order to deeply analyse the effect of bargaining level on wage dispersion and compare the value of each decile of the distribution of wages for the purposes of identifying the quantitative differences in wage compression.,In general, the outcomes positively linked firm size and firm bargaining to wage dispersion. However, if firm size is taken into account, the effect of firm bargaining is limited among small firm workers because this type of firm is not usually covered by firm bargaining. On the other hand, the time analysis allows observing a wage compression that follows different patterns depending on firm size, compressing the higher part of the distribution in case of small firms and the lower part in case of large firms. This should be explained by the fact that wage negotiation is dependent on firm size.,Firm size has determined firm adjustment strategies to face the recent economic crisis and allows to evaluate the impact that changes in collective bargaining can have on wage distribution,There is no research that has tried to analyse the relationship between wage dispersion and firm size in a context where collective bargaining is essential to understand the wage structure. Normally, firm size plays a decisive role in wage policy given that the capacity of a company to negotiate an agreement is closely linked to its size.

中文翻译：

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集体谈判会影响公司规模影响工资分散的方式吗？西班牙证据

本文分析了“两层”集体谈判系统（企业谈判和多雇主谈判水平）中工资分散与公司规模之间的关系。集体谈判在决定西班牙的工资方面起着决定性的作用，其法规在很大程度上限制了小企业谈判自己的集体协议的可能性。基于2006、2010和2014年西班牙收入结构调查，作者使用了为了深入分析讨价还价水平对工资分散的影响，并比较每个工资分配十分位数的价值，以便确定工资压缩的数量差异。工资分散。但是，如果考虑公司规模，在小型公司中，公司讨价还价的作用是有限的，因为这种类型的公司通常不包括在公司讨价还价中。另一方面，时间分析允许观察工资的压缩，该压缩取决于公司规模而遵循不同的模式，如果是小公司，则压缩分配的较高部分，如果是大公司，则压缩较低的部分。这可以用工资谈判取决于公司规模这一事实来解释。公司规模决定了公司调整策略以应对最近的经济危机，并允许评估集体谈判的变化可能对工资分配的影响，没有在集体谈判对于理解工资结构至关重要的情况下，试图分析工资分散与公司规模之间关系的研究。一般，