Young women filled 78 percent of the earliest maquiladora jobs along the border.
In 1964, the United States terminated the Bracero Program, which had allowed Mexican agricultural workers to cross the border seasonally since 1942.1 Hundreds of thousands of men returned to Mexican border towns with no employment waiting for them. The Mexican government responded in 1965 with the Border Industrialization Program, allowing foreign firms to import raw materials duty-free, assemble products using Mexican labor, and export the finished goods back across the border.2
The first industrial park opened in Ciudad Juarez, Chihuahua, in 1966, attracting a television manufacturer.3 The factories were called maquiladoras, from the Spanish maquila, a colonial-era term for the fee a miller charged to grind another person's grain. By 1973, more than 200 maquiladoras operated along the northern border, with Baja California hosting 102 of them.3
The program was designed to employ the returning braceros. Instead, young, single women filled as many as 78 percent of the earliest positions.4 These women, mostly born and raised in the borderlands, had been economically invisible before the factories arrived.
By 1985, the maquiladora industry had become Mexico's second-largest source of foreign earnings, behind oil and ahead of tourism.4 A currency devaluation in the early 1980s and changes in U.S. customs law drew a wave of American firms seeking cheaper labor than they could find in Asia. The passage of NAFTA in 1994 accelerated the trend further, and between 1995 and 2000, exports of assembled products from Mexico tripled.5
Competition from Chinese Special Economic Zones slowed the industry after 2000, and roughly 529 maquiladoras closed in 2002 alone.5 As of early 2025, approximately 6,550 IMMEX-registered manufacturing establishments operate in Mexico, employing more than 3.2 million workers and generating nearly 90 percent of the country's manufactured exports.6