SA8000 is not an ISO-series standard.

Many aspects of SA8000 are similar to the ISO 9000 series of standards, such as preventive and corrective action, management review, planning, implementation and measurement of effectiveness, control of suppliers, records and the need for verifiable objective evidence.
There are some differences from the ISO 9000 series requirements. These include SA8000 provisions to disclose information to selected third-parties, an increased reliance on employee interviews, which are confidential and may be off-site, and the collecting of evidence from outside of the company, such as from the local health department, economic development agency, church or school. Additionally, the scope of registration cannot be limited to only certain buildings, assembly lines, processes or areas; all areas including recreational and dormitory areas must be assessed if present.