As used in this article, unless the context requires, the following terms shall have the meanings indicated:
Any person holding a position by election, appointment or employment in the service of the City, whether or not compensated, or volunteer expressly authorized to participate in a City-sponsored volunteer program, but shall not include independent contractor. The term "employee" shall include members of all Boards and Commissions of the City. The term "employee" shall also include a former employee, his estate or judicially appointed personal representative.