Sex work or prostitution marks a controversial topic for Protestant sexual ethics. It is also a multifaceted phenomenon because it can occur in very different forms: the spectrum ranges from poverty, emergency and procurement prostitution to the self-determined and insured sex worker with all imaginable shades in between. In the current economic system, goods and services are exchanged, traded, sold, acquired and paid for, so sex work can also be understood as work. For the purposes of this article, we will (...) therefore start from an understanding of sex work as care work. Care work can be understood as the satisfaction of needs and interests of third parties and the self. If sex work is discussed as care work, this has a variety of consequences. These include the fact that questions of vulnerability and integrity come to the fore. Integrity can be comprehended as self-realisation or autonomy and thus as potentially vulnerable, taking up Axel Honneth’s early reflections on the issue of recognition. Integrity in Axel Honneth’s sense can - according to a first approximation - play a role for sex work on three levels: physical or corporeal level, structural level and lifestyle or way of life level. Finally, the essay discusses the concept of negotiated or consensual morality as a contribution of Protestant ethics. (shrink)