The employer may administer breathalysers, conducted by the occupational physician, only where workers perform duties subject to an absolute prohibition on alcohol consumption (e.g. drivers, machinery operators). For all other employees, the employer must provide medical examinations as part of health surveillance aimed at detecting potential alcohol dependency and may, where appropriate, take disciplinary action if alcohol consumption impairs work performance. However, if an employee attends work in a state of manifest drunkenness, the employer may initiate disciplinary action which may result in dismissal.