As big Western supermarkets make windfall profits, their aggressive pursuit of ever-lower wholesale prices is causing misery for people at the bottom end of the supply chain — people like Cahyonugroho who produce and process the seafood, according to an investigation by an alliance of NGOs focused on three of the world’s largest producers of shrimp provided to The Associated Press ahead of its publication on Monday.

The analysis of the industry in Vietnam, Indonesia and India, which provide about half the shrimp in the world’s top four markets, found a 20%-60% drop in earnings from pre-pandemic levels as producers struggle to meet pricing demands by cutting labor costs.

“The supermarket procurement practices changed, and the working conditions were affected — directly and rapidly,” said Katrin Nakamura of Sustainability Incubator, who wrote the regional report and whose Hawaii-based nonprofit led the research on the industry in Vietnam. “Those two things go together because they’re tied together through the pricing.”