An education benefit available to all corporate and franchisee employees of the large quick service restaurant (QSR) under study is an opportunity to achieve a high school diploma at no cost by enrolling in online high school (OHS). The purpose of this research was to explore the role of Thomas Gilbert's behavior engineering model factors--information/data, resources, incentives, knowledge/skills, capacity, and motives--in helping 15 QSR employees to graduate from an OHS program. This study was warranted because in order to improve employee OHS graduation rates, the QSR under study needed to better understand and cultivate the success factors for OHS program completion. A basic qualitative methodology was used for this study and semistructured telephone interviews were conducted as the primary form of data collection. Thirty online learner success themes were synthesized from the data during the analysis process. Technology, and study skills were the only factors identified by all 15 study participants as being factors in their program success. The most influential online learning success factors reported by study participants were design of instruction, program policies, the role of the academic coach, program accessibility, and student characteristic of persistence/determination. Lack of time to complete OHS lessons was the top challenge to success shared by study participants. The online learning success factors that are currently in place at OHS and the QSR under study and are recommended to continue include 24/7 availability of the program, accepting transfer credits, the role the academic coach, the ability to retake tests, and the QSR under study covering the cost of the program. Recommendations to improve QSR restaurant environmental success factors include increased OHS program follow-up by QSR corporate and franchise leadership, scheduling OHS lesson completion time on restaurant schedules, and providing a reliable computer/tablet. [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://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]