How employers can fulfil their legal duty to provide health surveillance and is addressed to those responsible for managing workplace risks. Guidance expands upon the basic tenets of such monitoring, namely the implementation of systematic, regular and appropriate procedures to detect - and act upon - early signs of work-related ill-health among employees exposed to certain risks.It then steers the reader through a selection of legally compliant measures - ranging, for example, from periodic distribution of questionnaires to specific medical checks by doctors or even biological and biological effect monitoring - and accordingly enables employers to decide whether they apply to their particular circumstances. Also concentrates on the central issue of good record keeping.