This volume presents the reports from the workshops held in conjunction with the European Conference on Object-Oriented Programming (ECOOP 2008), taking place in its 22nd edition at Coral Beach in Paphos, Cyprus, July 7–11 2008. As is customary, the workshops introduced the conference, taking place on the first two days (July 7 and July 8 2008) prior to the main technical track. The workshops were first chosen through a rigorous process with stringent selection criteria, carried out by the members of the Workshop Selection Committee. This volume collects reports from the resulting high-quality workshops. The topics covered span areas related to object-oriented programming and technology, such as programming languages, aspects, parallel computing, formal techniques,software engineering, tools, and applications. By summarizing the outcome of these workshops, this volume provides readers with a comprehensive set of pointers into current trends and issues of intense investigation and debate in the field of object-oriented technology. Following the tradition, the individual workshop reports summarize the workshop goals, before providing an overview of the presentations and sometimes also a summary of the issues and findings of debates fueled by the presentations. Some reports may also include a list of participants or contributed position papers. Several of the reports also contain a list of references to relevant publications and websites, including the workshop home page which usually offers the contributed position papers for download and may present further material.