The status in employment refers to the type of explicit or implicit contract of employment that the incumbent of a job has with other persons or organizations. The basic criteria for classification are the type of economic risk, including the strength of attachment between the incumbent and the job, and the type of authority that the job incumbents have over enterprises and other workers. The 1993 ICSE distinguishes six groups: employees; employers; own-account workers; members of producers’ cooperatives; contributing family workers; and workers not classifiable by status.