The antonyms of "leaved service" are "joined service" or "continued service." When someone joins service, it means they are beginning a new job or career. Conversely, when someone continues service, it means they are staying with the same job or employer.
Choosing to leave service can be a significant decision, and it often involves thought and contemplation. It may be due to personal or professional reasons, such as seeking new opportunities, relocating, or retirement. Sometimes leaving service is not a choice, and it can be a result of layoffs or company downsizing.
Overall, whether someone is leaving, joining, or continuing service, it is all part of the natural progression of life and career.