Exploitative working conditions for migrant workers in industrial fisheries have recently drawn considerable attention among activists and scholars, often with a focus on Asian fisheries. Even so, fish work can offer a better livelihood option than migrant workers might have in their home countries. These contradictions are apparent in fisheries around the world, including those based in Europe and North America. In this paper we explore the incongruities and patterns of working conditions for migrant workers in Irish fisheries, situating how the global seafood industry relies on a racialised labour force that is devalued to produce raw materials for high-value seafood products, before turning to an analysis of a decades-long campaign to improve Ireland’s legal framework for migrant fish workers. Persistent campaign work illustrates how a multi-pronged approach, including legal strategies and actions to make the injustices in Irish fisheries more visible, is critical to provoking change, even as working conditions remain far short of most land-based sectors in that country.