The Influence of Shift Workers Sleeping Quality upon Job Performance

In the past few decades shift workers are highly needed to meet the demands of globalization and the 24-hour society worldwide. There are about 20% of labors doing shift jobs in America and European. In Taiwan, there are almost 35.5% of labors work shift jobs. Shift and night shift workers usually sleep 15-20% less than the regular workers, and, the sleeping quality during the day time is not as good as during the night. This study discusses the relationships between sleeping quality and job performance of shift workers on various shifting working hours by reviewing the previous literatures and researches. On the other hand, the study further compares the two methods of measuring sleeping quality and discusses the advantages and weakness of different testing methods. The results could provide more useful references to researchers who are interesting in the issues of sleeping quality and shift works while choosing instrument of testing sleeping quality.