Dhaka, BangladeshGolam Mostafa Sarder starts every day before dawn, rising from a thin reed mat in the shed that he shares with fifteen roommates. Each has just enough space to lie flat. He dresses in gym shorts and t-shirt by the light of a single dangling bulb.

Outside the shed’s open doorway, in the outskirts of Dhaka, the sprawling megacity capital of Bangladesh, is the brick factory where Golam and his neighbors work for fifteen hours a day, seven days a week, at least six months a year. His home in Gabura, a remote village on the country’s southwestern coast, is more than a day’s journey from the city by bus, rickshaw, and ferry.

Golam’s job is to push wheelbarrows of mud