The Relationship Between Size and Performance of Mail Sorting Offices
研究两个发达国家邮件分拣办公室的规模与绩效关系，发现约450名员工时绩效最优，大办公室因动机下降、工作方法专业化及工业关系恶化而绩效下滑，小办公室则因低需求时段人员闲置而受影响。
The paper gives the main results of studies on the size-performance relatio ship of mail sorting offices in two of the developed countries. A distinct optimum size was found at about 450 total operatives and the major factors causing the declining performance of larger offices were identified as deteriorating motivation, increasing specialization in work method, and a poorer industrial relations climate. The performance of small offices is believed to be adversely affected by the minimum number of operatives needed to guarantee service during periods of low demand but who cannot be fully occupied. Special attention was paid to the definition of terms and to statistical technique as these matters have been noted as weaknesses of some previous studies on the effects of size in organizations.