从上世纪90年代初起，许多分析家就把美国松散的工会组织、任意的聘用关系、法律对工作的有限保护、以及频繁的工作变动视为失业率低于大多数欧盟国家的主要因素。
From the early 1990’s on, many analysts viewed America’s weak unionization, at-will employment, limited legal job protection, and high job turnover as major factors in achieving a lower unemployment rate than most EU countries.