Wednesday, 23 April 2025 () While it is not always acknowledged, but our work environment, colleagues and bosses have a huge impact on our mental health. While good coworkers uplift our spirits and make the workplace fun, toxic coworkers can quietly erode morale, destroy team dynamics, and even affect our mental health. Unlike obvious troublemakers, toxic individuals often use subtle behaviours that are hard to detect but are deeply harmful over time. Here we list some psychology-based tips to spot a toxic co-worker: