The authors developed and meta-analytically examined hypotheses designed to test and extend work design theory by integrating motivational, social, and work context characteristics. Results from a summary of 259 studies and 219,625 participants showed that 14 work characteristics explained, on average, 43% of the variance in the 19 worker attitudes and behaviors examined. For example, motivational characteristics explained 25% of the variance in subjective performance, 2% in turnover perceptions, 34% in job satisfaction, 24% in organizational commitment, and 26% in role perception outcomes. Beyond motivational characteristics, social characteristics explained incremental variances of 9% of the variance in subjective performance, 24% in turnover intentions, 17% in job satisfaction, 40% in organizational commitment, and 18% in role perception outcomes. Finally, beyond both motivational and social characteristics, work context characteristics explained incremental variances of 4% in job satisfaction and 16% in stress. The results of this study suggest numerous opportunities for the continued development of work design theory and practice.Keywords: work design, job design, satisfaction, performance, social support Interest in work design has a long history. Early writings focused on how the division of labor could increase worker efficiency and productivity (Babbage, 1835;Smith, 1776). The first systematic treatment of the topic was conducted in the early part of the 20th century by Gilbreth (1911) and Taylor (1911), who focused on specialization and simplification in an attempt to maximize worker efficiency. Yet, one of the problems of designing work to maximize efficiency was that it tended to result in decreased employee satisfaction, increased turnover and absenteeism, and difficulties in managing employees in simplified jobs (Hackman & Lawler, 1971).Reacting to this, researchers developed theories focusing on the motivating features of work (Hackman & Lawler, 1971;Hackman & Oldham, 1975;Herzberg, Mausner & Snyderman, 1959;Turner & Lawrence, 1965). The motivational approach forwarded by these scholars has been influential over the past 30 years (Morgeson & Campion, 2003). For example, the key articles summarizing Hackman and Oldham's job characteristics model and measures have been cited nearly 2,000 times by researchers (ISI Web of Knowledge, 2006). Although the model is more than 30 years old and there are several criticisms of its key propositions and measures (Johns, Xie, & Fang, 1992;Morgeson & Humphrey, 2006;Roberts & Glick, 1981;Taber & Taylor, 1990), it retains a central place in work design theory today. Yet the success of the motivational approach has had two curious effects on work design research over the past 30 years.First, it has focused research attention on a limited set of motivational work features (e.g., skill variety, autonomy). Although these are important work characteristics, other important aspects of work (such as the social environment and work context) have been neglected. As a conseq...