The article presents the notion of violence in indoor sex work in Poland. It encompasses forms of violence experienced by female sex workers from their clients and co-workers. What is more, the paper presents how novice and more experienced workers define those experiences, together with the strategies that they apply when dealing with aggressive clients. Also discussed are the actions taken against the clients that present aggressive behavior by the managers and security workers of escort agencies. The article is based on qualitative field research carried out in escort agencies in Łódź, Poland. The main techniques of data collection comprised observations and unstructured interviews. The data were analyzed in accordance with the grounded theory methodology.