This study investigates the relationship between leadership styles (e.g., taskoriented, relationship-oriented and participative leadership style), perceived control, psychological ownership of the job and several volunteers' work attitudes. Particular attention is given to turnover intentions, psychological withdrawal and senses of responsibility. Research participants were 162 volunteer workers from diverse occupational groups across 19 non profit organizations. Results of Persons correlations and mediated regression analyses demonstrated that (a) psychological ownership did not have relationships with turnover intentions and sense of responsibility but was significantly related to psychological withdrawal; (b) task-oriented, relationshiporiented and participative leadership style were positively related to perceived control, (c) perceived control was positively related to psychological ownership; (d) psychological ownership did not have mediating effects between perceived control and the volunteers' work attitudes; (e) perceived control only had a mediating effect between task-oriented leadership and psychological ownership. Recommendations for further research and implications for management are discussed in the final chapter.

In contemporary organizations, managing workers’ attention is more critical to success than managing workers’ temporal location. Mindfulness, which represents an essential dimension of attention, has been associated with many important individual and work outcomes. However, we know relatively little about how mindfulness is cultivated at the individual level, and the little we know places the individual in full control of cultivating mindfulness; implicitly conceptualizing managers as relatively passive characters in the cultivation of worker mindfulness. Integrating the mindfulness literature with work design, I propose an attention-based model of work design, through which key work characteristics are linked to worker mindfulness through the mediating effects of psychological demands and job-based psychological ownership. I test portions of this model with two samples. In sample 1, I use survey data from 555 employees from a regional healthcare system to examine the relationships between key work characteristics and job-based psychological ownership. In sample 2, I use survey data from 211 individuals to test both the proposed job-based psychological ownership path to mindfulness, as well as the proposed psychological demands path to mindfulness. I end with a discussion of the findings, limitations, and opportunities for future research.