A new study warns of a doubled risk of a fatal heart condition due to work-related stress. Job strain and lack of reward are linked to a higher chance of developing atrial fibrillation (AF), an irregular heartbeat that can lead to serious heart issues. The study found that high job strain and effort-reward imbalance increase the risk of AF. Recognising and addressing workplace stressors is important for preventing AF and promoting healthier work environments. The study, conducted on Canadian office workers, highlights the need for interventions to reduce work-related stress.