Background: Conventional treatment of displaced midshaft clavicular fractures is nonoperative. Recent studies have implied that operative treatment might result in a faster return to work, resulting in a decreased productivity loss for society. The cost utility of plate fixation vs. nonoperative treatment of displaced midshaft clavicular fractures has not previously been investigated using a societal perspective. Methods: Decision analytical modeling of incremental costs and quality-adjusted life-years (QALYs) was performed. Data on utility, hospitalization, and productivity costs were retrieved from a Danish randomized controlled trial. Supplementary data were taken from randomized controlled trials identified in the literature. A 1-year time horizon was applied, and all prices were reported with respect to a 2016 level. Results: Operative treatment was associated with a larger QALY gain in patients and a higher cost compared with nonoperative treatment. The incremental cost-effectiveness ratio (ICER) was estimated in Danish currency ( Danish krone [kr]) at kr1,360,000 ((sic)182,306) per QALY from a health-sector perspective and kr1,388,738 ((sic)186,158) per QALY from a societal perspective. Considering a subgroup analysis of patients with a high-load shoulder profession, operative treatment was dominated by nonoperative treatment from a health-sector perspective. Considering a societal perspective, the ICER was estimated at -kr889,091 (-(sic)119,181) per reduction of 1 QALY. One-way and probabilistic sensitivity analyses showed that the results were subject to uncertainty. Conclusion: Operative treatment is not cost-effective when considering a threshold of (sic)34,000/QALY. However, for a subgroup of patients with a high-load shoulder profession, operative treatment might be cost-effective compared with nonoperative treatment. (C) 2019 Journal of Shoulder and Elbow Surgery Board of Trustees. All rights reserved.