© 2014 The Author 2014. Published by Oxford University Press on behalf of The British Association of Social Workers. All rights reserved. The aim of this paper is to critically examine the social work profession's enactment of classifying a group of people as sexual minorities on the basis of the essentialist paradigm along with the Western-centred legacy of scholarship. To enhance epistemological acuity for social workers, the historical backdrop of, theoretical applications concerning, and the ongoing debate between essentialist and social constructionist approaches to sexuality are reviewed. We also conduct a transnational analysis of sexuality discourses by juxtaposing their development in the Western and Taiwanese academic scholarship...