Many countries have adopted national plans of action to combat child trafficking, but the lack of reliable statistical information remains a significant obstacle - most data focus only on the cross-border trafficking of girls and women for sexual exploitation. She has been working in the city's mass transit system selling hairpins and other products since she was 3 years old. Many of those engaged in child labour experience its worst forms - including forced and bonded work, illicit activities, armed combat and domestic labour.