This booklet explains pleural plaques as a non-cancerous condition affecting the lining of the lungs that arises from past asbestos exposure, often many years after contact in the workplace. It outlines who may be affected, how the condition develops, and why a diagnosis can still carry important legal significance even where there are no physical symptoms. The booklet also highlights employers’ duties to protect workers from asbestos exposure and stresses the need to obtain advice promptly, as claims in Scotland are generally subject to a three-year time limit. Importantly, it notes that pleural plaques are recognised in Scotland as actionable harm under the Damages (Asbestos-related Conditions) (Scotland) Act 2009, meaning affected individuals may be entitled to pursue compensation.