Wage-size relation and the structure of work-force composition in Italian manufacturing firms
研究了意大利制造业企业生产率和规模对劳动力成本的影响，发现规模越大，非生产工人比例越高，导致白领劳动力成本上升。
In this paper we study the impact of firms’ productivity and scale of activity on the cost of labour for Italian manufacturing firms, investigating how the work-force composition affects the total expenditures for wages. Our analysis reveals that once productivity differences among firms are accounted for, size still retains a positive effect on cost of labour. We show that the source of this phenomenon is the relatively higher proportion of non-production workers in bigger firms, which results in a cost of labour for white collar workers that increases with increasing firm size.