The certification credential is the highest available technical competency credential for an occupational/industrial hygiene (OH/IH) professional. It is internationally recognised as a measure of excellence and signifies a certain level of competence and specialized knowledge and skills. The credential holder has been assessed and verified on their level of education, years of experience, and by examination. The importance of a certification credential in OH/IH impacts the globe as it elevates the profession to ensure the global workforce is protected from workplace harm.