In 2015, the Bureau of Labor Statistics (BLS) reported that nearly a quarter of all employed U.S. workers are in a profession that requires an occupational license. Given the prevalence of licensing, it is one of the central factors that shapes employment opportunities for many workers. Licensing is also one of the most restrictive forms of occupational regulation since it legally prohibits individuals from working in a licensed occupation if they do not fulfill a jurisdiction's educational and/or experience requirements. The American Institutes for Research (AIR) worked with the National Conference for State Legislatures (NCSL) and its partner organizations, the Council of State Governments (CSG) and the National Governors Association (NGA) Center for Best Practices, to conduct case studies of 11 different states that undertook efforts to review their licensing practices. Each case study in this report takes a retrospective look at one of the occupational licensing initiatives undertaken by a Consortium state. Collectively, the case studies shed light on the processes, successes, challenges, and effects of occupational licensing initiatives pursued by each state. The case studies offer important insight into factors that facilitated and hindered success within licensure efforts. The case studies in this report focus on the following states: (1) Arkansas; (2) Kentucky; (3) Delaware; (4) Wisconsin; (5) Utah; (6) Connecticut; (7) Illinois; (8) Indiana; (9) Nevada; (10) Colorado; and (11) Maryland. The information gathered from the background materials, the interviews, and the quantitative data was used to develop each of the 11 case studies. Each case study includes an introduction, a description of the focal topic, a summary of the findings, a description of the case study approach, and detailed findings.