This paper is not a clinical study, but it has some important conclusions for occupational health. Strategies for reducing occupational stigma should be prioritized to increase gig workers' workplace well-being. Giving gig workers more control over their work is likely to buffer the detrimental effect of occupational stigma on work-contingent self-esteem. Objective: In this article, the influence of occupational stigma on workplace well-being of platform-based food-delivery workers is examined. The mediation effect of work-contingent self-esteem and the moderating effect of job control are also assessed. Methods: Questionnaire data from 362 platform-based food-delivery workers were gathered at three time points, and multiple regression analyses were used to test each hypothesis. Results: Occupational stigma reduces workplace well-being of platform-based food-delivery workers, and this relationship is mediated by work-contingent self-esteem. Job control exerts a negative moderating effect on the relationship between occupational stigma and platform-based food-delivery workers' work-contingent self-esteem. Conclusions: Strategies for reducing occupational stigma should be prioritized to increase workplace well-being in gig workers. Giving them more control over their work will likely alleviate the detrimental effect of occupational stigma on work-contingent self-esteem. [ABSTRACT FROM AUTHOR]