Actually, with BOI, the employer needs to cancel work permit from the system. Then, the employee needs to go to the immigration to get current visa canceled and get a new stamp. So, I think yes, we can call that stamp an extension.
Last time, I got 15 days and my girlfriend got 7 days
Not sure this time.
Some of my friends got 1 month extension provided by their employer. Some got even 2. I'm wondering if I can do that by myself because my employer said they won't.