OHS Management System standards all require the regular implementation of audits. Auditing is a challenging task which requires extensive experience and training. However, the OHS professional should be sufficiently knowledgeable about and competent in OHSMS auditing in order to decide what kind of audit is required, its effective implementation, and its use as part of a monitoring and continual improvement strategy. This includes knowing how to effectively design and conduct safety observation tours, gap audits, compliance audits, documentation audits and other inspections of various types.