The antonym for "are on duty" is "are off duty." When someone is "on duty," it means they are working or responsible for performing a particular task or duty. Conversely, when someone is "off duty," it means they are not working and are free to do whatever they please. In many professions, such as healthcare, law enforcement, and emergency services, individuals work rotating shifts and alternate between being on duty and off duty. Being off duty provides much-needed rest and relaxation, allowing individuals to recharge their batteries and be prepared for their next shift. The antonym of "are on duty" is an essential concept that ensures a work-life balance, promoting better health and well-being.