Workforce credentials include the various methods used in the workplace to measure on-the-job competency, such as educational degrees, licenses, certifications, and experience. Licenses are knowledge and skill credentials that are legally required for some occupations. Licensing requirements often vary by state. Certifications are examinations that test or enhance your knowledge, experience or skills in an occupation or profession. Apprenticeship Programs offer supervised, structured on-the-job training combined with related technical instruction.Military training and experience help earn credentials for military or civilian careers.