Mastering the Job Market: Career Issues for Master’s Level Industrial-Organizational Psychologists is the definitive source for practical advice and data-based recommendations addressing key issues leading to successful careers as industrial-organizational (I-O) master’s practitioners. Both the U.S. Bureau of Labor Statistics and the American Psychological Association have reported a bright outlook for I-O master’s graduates. The increased interest in and growth of I-O master’s programs and graduates are attributed to higher visibility in the workplace, readily obtained jobs, interesting work, and great pay. A large nationwide survey of I-O master’s practitioners and their employers lays the foundation for the data-based recommendations throughout the book. Authors from top-ranked I-O master’s programs address topics such as the job search, applying for jobs, on-boarding, organizational roles, salaries, career transitions, and maintaining professionalism throughout one’s career. Critical insights into the nuts and bolts of conducting a job search and other specific strategies are provided to enable job seekers to land one or multiple job offers within six months of graduation. Competencies identified as essential for success as an I-O practitioner include core I-O knowledge and skills, as well as enabling competencies such as oral communication, business acumen, consulting skills, project management, ethics, and technical writing. Mentoring is discussed, and three best practices are recommended for maximizing mentoring relationships. Recommendations are made for professional development opportunities for I-O master’s graduates to increase their knowledge and skills and to advance their careers. Graduates overwhelmingly perceive their I-O master’s degree to be valuable for their career success.