How much is 1 lapad worth?

Travel Info
My son is a factory worker inTokyo, Japan and he said he's receiving 8 lapads. I do not know what lapad means but among Filipinos it is the money they receive from their employers. How much yen is 1 lapad. Will my son be able to live comfortably with that pay considering the high cost of living in Tokyo.

Travel Tips

I found an information that 5 lapad is 50000yen which means that 1 lapad must be 10 000 yen
http://www.philippinestoday.net/july2002...

Now , there is something you must know as a father. Many foreign unskilled workers, taken to Japan to study the job, actually are exploited by some shadow companies. The government is fighting to stop this, but for now,without a much success. There was recently a case of some Chinese girls, who were invited to study for tailors or something,and were paid like 320yen/h, while the lowest legal hourly wage is over 600yen.They were asked to work overtime without any payment. Finally, exhausted and starved, they left work.
The article is only in Japanese,and I'm not giving it here.
In Tokyo no one can survive with 80000 a month.So maybe it is best to talk to your son again.
Others

The currency of Japan is Yen. Not a lapad.
Who is the broker of your son's business trip? Ask the broker.
The Filipinos in Japan call yen lapad. I believe 1 lapad is either 1,000yen or 10,000yen. Can't really remember it was like 10 years ago.