Yes, it is possible that a coworker may appear lazy due to underlying issues such as stress, burnout, personal problems, or a lack of engagement in their role. These factors can significantly affect a person's work performance and motivation. Before labeling someone as lazy, try to understand the root cause of their behavior. Be empathetic and consider offering support or suggesting resources to help them address the underlying issues. By helping them overcome these challenges, you may see a significant improvement in their performance and motivation.