Job Organization Structure The Commonwealth's job organization structure consists of seven Occupational Families. The Occupational Families are divided into Career Groups. Career Groups are comprised of Roles. Definitions An Occupational Family is a broad grouping of jobs that share similar vocational characteristics. A Career Group is a sub-group of an Occupational Family. A Career Group identifies a specific occupational field common to the labor market. A Role describes a broad group of occupationally related positions that represent different levels of work or career progression. A work title is a specific title used by an agency to describe a specific position.