In this short review article, we quickly examine various retrial queueing systems with various working vacation model types. In computer communication systems, manufacturing/production systems, and inventory systems, in particular network service, web service, file transfer service, mail service, etc., the idea of working vacations has a wide variety of applications. Retrial queues are very helpful for studying stochastic computer and communications networks, among other systems. The goal of this study is to give various retrial queueing systems with variable service.