mom-ni-prince

3 months visa = business visa (Still available but cannot be extended. Exit is to country of origin on passport)

28 days visa = tourist or ordinary visit visa (still available but cannot be extended. Exit is to country of origin on passport)

family visit visa = initial is one month but can be extended up to six months (but need to have medical exam at the medical commission to be granted extension). It can be processed to an RP for immediate family (spouse and children).

In the Philippines, the above visas do not need medical certificate. But all need to be authenticated by Qatar Embassy in Manila (via DHL), also you need to present a two-way ticket (return ticket).

Work visa will need medical certificate, visa authentication letter, POEA docs, signed contract and OEC presented when you pass through immigration counter in Manila for first timers. For old timers you need your OEC.

So you need to check what type of visa you are issued.