Positive and healthy work environments enhance job satisfaction and workplace engagement and play a significant role in the healthy functioning of library organizations. Higher levels of workplace satisfaction and engagement also contribute to increased productivity, creativity, and performance, and by extension improved services and organizational culture. But how do we define, cultivate, and sustain positive and healthy work environments, particularly in libraries, which are often under-resourced, unappreciated or devalued, or even toxic? Building and Sustaining Positive and Healthy Work Environments examines the opportunities, challenges, and successes of fostering and nurturing workplace environments that enhance job satisfaction, engagement, and success.