This paper directly tests for differences in returns to education between the employed and self-employed in Hong Kong. Using a step-function, we find significantly smaller returns for the self-employed, suggesting that in the highly competitive labor market of Hong Kong education plays a signaling role. This pattern persists for both genders, when accounting for self-selection into employment status and when accounting for self-employed professionals who signal. [Copyright of Education Economics is the property of Routledge. Full article may be available at the publisher's website: http://dx.doi.org/10.1080/0964529042000193925]