Do customers discriminate between workers? This work returns to this long-standing question by asking what role customers play in gender-based discrimination in labour markets in low-income countries. Using experimentally-induced variation in customers’ perceptions of online workers' genders and holding fixed worker behaviour, we find customers purchase significantly fewer products from workers assigned a female-sounding name. The results appear to be driven by relatively lower interest in engaging with female workers. This study has several implications for labour market policy.