According to Wikitravel, for nationalities who are not covered under the 21-day visa waiver, Philippines issues visa-on-arrival. The page linked to reads more like a press release with no further information on how to apply and the name - 'pre-arranged visa upon arrival' - sounds like the system they have in Vietnam where you need to apply in advance for visa-on-arrival. The website for Philippines Embassy in Singapore (the local embassy in my case) does not list anything about this, nor way I able to find information anywhere else online.
Is anyone aware whether VOA is operational for Philippines yet, and if yes, details about it?
Edit: To clarify I plan to go to Philippines for travelling, not business.