Since the late 1960s the Indonesian island of Batam has been transformed from a sleepy fishing village to a booming frontier town, where foreign investment, mostly from neighboring Singapore, converges with inexpensive land and labor. Indonesian female migrants dominate the island's economic landscape both as factory workers and as prostitutes servicing working class tourists from Singapore. Indonesians also move across the border in search of work in Malaysia and Singapore as plantation and construction workers or maids.

Export processing zones such as Batam are both celebrated and...