Missouri Samples — Certification of Service is a document confirming that an individual has completed their service in the state of Missouri. It is a document signed by a Notary Public that certifies that a person has provided a service in the state. The document serves as proof that an individual has been employed in the state and is legally allowed to remain in the state. There are two types of Missouri Samples — Certification of Service: 1) Professional Service, which is for service provided to an organization or business, and 2) Personal Service, which is for service provided to an individual or family. Both types of Certification of Service can be used as evidence of service for visa applications, immigration and naturalization, residency requirements, and other legal documents.