While the infamous Haymarket Affair occurred in Chicago on May 1, 1886, less known is the support it garnered among Black Caribbean labor thinkers, particularly in Haiti. Haitian intellectuals and activists saw parallels between American labor repression and their own struggles under post-independence economic hardship and neocolonial pressure. Haitian newspapers reported on the protests with sympathy, interpreting the labor movement as an extension of Black resistance to economic injustice. This early expression of transnational solidarity helped frame International Workers’ Day as a global Black issue, linking race and class struggles. Haitian thinkers argued that the dignity of labor must be central to any post-slavery society and saw May 1 as a symbolic rallying cry for economic freedom across the African diaspora.