An under-researched topic related to sleep among older workers is now better understood thanks to a recent study from the Universities of Eastern Finland and Turku. The study examined how mental and physical working conditions, stressful life situations, and work-life balance were associated with sleep problems in older employees. The study defined four components associated with mental stress. Social and environmental non-work adversity refers to loneliness and little interaction with one’s neighbours. Life event and health-related non-work adversity refers to a stressful event in one’s life, or the provision of informal care. “The more an employee had work and non-work stressors, the more problems they also had with sleep.” Flexibility is an important target for development. Different stress factors were associated with sleep problems in different ways: work-related stress was linked to current sleep problems, whereas loneliness and stress related to one’s living environment predicted increasing sleep problems during the follow-up. Psychosocial working conditions were also associated with sleep quality.