An engineer there makes about 2 a month before taxes .
In order to be an engineer the education requirements are brutal.
All if you have to do is tell some desperate divorcee 2-3x your age that you love him and can't imagine life without him, hit him with a sad story about your family not having enough to eat, you need to pay your little brother's tuition etc, and then the money starts to flow in.
In addition if you screw up there are 10 other people in line that want your job so you have very little bargaining power with the boss.
1.5 years of calculus along with all the other classes.A more realistic job is a teacher and they earn about 2 a month.So imagine yourself you have no higher education your job prospects are low and if are you are one of the lucky ones that does manage to find full time work you're making maybe 0-200 a month doing hard back breaking work!By the way neither of these scenarios are counting the horrendous stress of living in these major cities. Because it's a relatively easy way to earn money.
Just to give you an idea of what life is like in the Philippines.