An employee certification form that employers can use to track employees' COVID-19 vaccination status either as a stand-alone protocol or in conjunction with a mandatory or voluntary vaccination policy. Employers can use this as an employee self-certification or acknowledgment, an employer verification, or both. This Standard Document is based on federal law and federal agency guidance from the EEOC, the CDC, and OSHA. Employers must adapt this policy to comply with industry-specific and applicable state and local vaccination standards and requirements, which vary significantly and may change quickly (see COVID-19: Employment Law and Development Tracker: Box: Vaccine Mandates and Prohibitions). This Standard Document has integrated notes with important explanations and drafting tips.