Is it illegal to work in Manila, Philippines?

If you come to work, you need to apply for a legal work visa. In order to save money, many companies do not apply for a work visa for you, but only renew your tourist visa. If you don't apply for a formal work visa (pwp, 9g), you will be repatriated if you are found by the Philippine Immigration Bureau. Pwp is valid for three months and 9g is valid for two years, so if you come to work, you should check whether you have a formal work visa.