To those who want to resign, just have the courtesy siguro. For sure your employer will understand. Sabi nga ni sis "aquacharly", when you applied lahat willing kayo gawin, legally to get that post. In turn, when you resign, dapat sundin din natin yung tamang procedure. If maiiwasan na biglaan na lang umalis, mas mabuti.
On the otherhand, if the reasons are very compelling naman, like sobrang ganda ng opportunity or talagang kailangang umalis, technically, unless may pinirmahan kayo "non-competition clause" if you intend to transfer to another company which offers the same services or in line with the same business, walang magagawa ang employer ninyo because the Constitution guarantees it, I mean bawal ang force labor. Di ka pipiliting magtrabaho, kung ayaw mo na talaga.