The term WKS. AND WKS. is an acronym for two different job descriptions. The first acronym, WKS., stands for 'Workshop Supervisor, ' which is a position that involves overseeing the operations of a workshop or factory. The second acronym, YRS., stands for 'Yard Supervisor, ' which is a position that involves managing the activities of a yard or outdoor area. Both positions require strong organizational and leadership skills, as well as the ability to manage personnel and resources.