Would like to supplement to the explanation given by our learned senior member Mr.KKHR,
pre-employment medical health check up is mandatory; Every organization made it compulsory, after arrival of epidemic Covid-19. But it differs from company to company and also varies from position level to position level. For e.g. recruitment of Welders, Vehicle Drivers and other skilled jobs warrants good eye-sight and hence they (selected candidates) are subject detailed eye-examination. But for managerial candidates, pre-employment medical examination consists of even psychological tests by a qualified psychologist (to assess his behaviour at different situations). In addition to this, they are subject to such tests which measures his BP., Cholesterol, Cardiac health,(ECG), EEG, etc.