This class identifies a person who works for or represents an organization and who may be contacted under specified circumstances. This class is very similar to the ContactParty in Person Demographics, the diffence being that this class is used to identify a contact person for an oganization, while the ContactParty class is used to indentify a contact person (who may be a relative) for a patient. Note that because all we need is the person's name and contact information (address, phone numbers), this class does not have an association to the Person class (although logically it should). This is because the other properties of Person, such as sex and date of birth, are irrelevant to the usage. The HL7 Role class allows for names and addresses on the Role, which technically should be only those names or addresses as the relate to the role (i.e., as they differ from those in Person class), but since these are available for use, we are utilizing them in this manner, even though it is somewhat irregular.