Brazilian banks have long treated telemarketing as an ancillary activity, outsourcing telemarketers presumably to keep them outside the scope of banking collective bargaining agreements (CBAs). Both premises became contested over time, generating a wave of lawsuits. These lawsuits, in turn, reveal that banks assign contracted workers to tasks beyond the original agreement. For instance, more than 2,500 lawsuits involving a well-known bank in Brazil—where contracted telemarketers performed teller, administrative, and IT tasks—illustrate how far banks can push labor outsourcing beyond its contractual nature. I explore how banks resort to breaches in labor outsourcing contracts to escape from more stringent CBAs, and how they responded when the Labor Supreme Court ruled in favor of contracted workers. In this project, I combine employer-employee administrative records, CBAs, and unlawful outsourcing lawsuits in the banking industry, exploiting variation across municipalities in the three data sources.