Nathalie Mago's work day begins after she's tucked her three daughters into bed and flicked off the lights in their house north of the Philippine capital Manila. As her young family sleeps, she fires up her laptop and begins discussing the day's agenda with her boss -- an American half a world away. A "virtual assistant", Mago is one of a growing number of Filipinos flocking to the booming but unregulated sector in the face of a tight job market, low wages and frequently hellish commutes. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES