Nontenure track (NTT) faculty make up 73% of faculty at universities and colleges across the United States and nearly 67% of the faculty workforce at Masters colleges and universities (Larris, 2018). There are myriad reasons for this growth, including financial pressures placed on universities and incentives to be more marketable and competitive in the higher education marketplace. But within this faculty workforce, some NTT faculty may feel like second-class citizens in their department because of low wages and tenuous job security. In contrast, others may enjoy teaching the occasional class and consider the flexibility of NTT employment a benefit. With NTT faculty comprising an increasingly large share of the faculty workforce, it is important to understand the sense of commitment they have to their department, as it may impact the quality of undergraduate education. This study examined the level of commitment of NTT faculty to their departments, using a mixed-method approach that utilized a quantitative analysis, comprising responses from Three-Component Model of Commitment (TCMC) survey to assess the level of affective, continuance, and normative commitment of NTT faculty, and qualitative analysis of the responses from interviews of NTT faculty regarding department policies and practices that do or do not contribute to their commitment. This analysis also explored how the type of department -- academic and professional -- affected the organizational commitment of NTT faculty. The study's conclusions provided new insight into the commitment of NTT faculty at Masters colleges and universities and offer an increased understanding of how department practices and policies contributed to NTT faculty commitment, which is essential for managing a productive and skilled faculty workforce. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]