Originally from the states, I've been renting a condo here in Manila for going on 6mo, neighboring IBM, Dell, and several other BPO buildings. I keep on US time and can vouch for it being just as busy at 4am as 4pm. I've heard mixed reviews on retaining employees, but English is ubiquitous. I've had to call AMEX and I end up talking to someone down the street, but wouldn't have guessed until they brought it up.