in our country. It's short for Pre-Departure Orientation and all legitimate Overseas Filipino Workers pass through this seminar before getting a go signal for deployment.

It is specifically part of the orientation about respect for the culture of the country of deployment specifically, the dress code.

Now if you see some "violating" such thing, either they are not documeneted OFW (they did not went through the orientation) or did not understand it or they love tripping on the line of what is the limit.