ABSTRACT The end of communism in Central and Eastern Europe resulted in wide-ranging social change, with established practices and relations being overturned in a relatively short period. Labour relations were an area that saw considerable upheaval as unions were released from state control and clandestine worker bodies were able to emerge. This article considers the medium-term effects of these changes by examining the characteristics of labour focused contention in Bulgaria from 2000 to 2019. This was a period during which the uncertainty that characterised the post-transition decade was settling, with new challenges and opportunities in the form of accession to the European Union, the global financial crisis, and the anti-government protests of 2013–2014 shaping the context for labour relations. This article draws on a unique dataset of labour protests to examine the claims, actors, and actions adopted to identify how the labour movement responded to these changes and the degree of trade union involvement in contentious events. The findings suggest there has been a shift from economic claims to encompass broader rights-based issues. They also suggest that unions have been visible in contentious actions but have been joined by a more diverse group of actors in advancing workers’ claims.