This document discusses mergers and collaboration between voluntary organizations. It provides an overview of reactive and proactive reasons for mergers, including financial pressures and meeting user needs more effectively. It also outlines different approaches to collaboration on a spectrum from informal partnerships to full mergers. The key steps of a merger process are discussed, including dating/negotiations, decision making, planning/legal work, and implementation. Two case studies are presented that show how mergers can reduce costs but also involve one-time costs and adjustments. Effective communication and keeping existing relationships are emphasized as important for a successful merger.