In the investigative report From Long Working Hours to Sudden Death: Investigation on Deadly Working Hour in Weda Bay, released in December 2025, the Indonesia Weda Bay Industrial Park is alleged of maintaining working conditions that collectively undermine occupational safety and health. Workers commonly endure 60-hour workweeks with rotating day and night shifts, exceeding both Indonesian labor standards and international recommendations. Interviewees reported chronic headaches, sleep disturbances, fatigue, alongside accounts of sudden deaths among young workers. These risks are allegedly intensified by exposure to high levels of dust, excessive noise, and extreme heat inside smelters. Female workers reportedly experience a set of workplace inequalities and rights concerns within the mining industry. Several female interviewees reported health had reported effects including irregular menstruation, fatigue, headaches, and musculoskeletal pain linked to prolonged sitting and poor ergonomic conditions. Women workers face difficulty accessing restroom breaks during periods of intense production and discomfort caused by male workers using women’s toilets. The report also documents instances of gender-based harassment, including verbal sexual harassment, inappropriate comments about women’s bodies, and allegations of unwanted physical contact.

The Business and Human Rights Centre had reached out to the investors of PT IWIP, including Tsingshan Group, Zhenshi Holdings, Zhejiang Huayou Cobalt, and CATL, to respond to the allegations. They did not respond.