Hitachi limited states that suppliers from asian countries have been identified to be in higher risk areas during the Human Rights Due Diligence research.

Hitachi puts special importance on the risks relating to migrant workers, including forced labour. They furthermore ask questions during their supplier questionnaires about migrant workers and child labour.

Sources:

"Hitachi, Ltd. and its subsidiaries asked key suppliers based in the Asian countries identified as high risk areas during a HRDD impact assessment process conducted in FY2015 to conduct CSR self-checks (previous version) including questions about forced labour. The results were collected and analyzed to take necessary remedial action. These self-checks have been carried out since fiscal 2007. In 2016, we have asked 316 suppliers to conduct and all of them completed a self-evaluation." - Point 4.3, page 2

"[...] Risks relating to migrant workers, including forced labour are one of the priority areas for action. [...]" - Point 4.1, page 2

"[...] The revised self-check sheet contains more concrete questions including forced labor, treatment of migrant workers, child labour, working conditions in accordance with the revision of new guidelines. [...]" Pont 4.2, page 2