Obtaining for work permit is not that difficult. In my experience it takes about 3 weeks max. If they're not willing to do it for any reason, you can either prepare the stuff on your own or hire some service to do it. Piece of cake.
Isn't that likely what the employer wants, Ngan Khanh?
Please correct me if I am misinformed. I have read multiple times on this forum that a work permit is for/belongs to the employer.
(Of course, I realize that posts on this forum do not constitute 'authoritative' information 😉 )
So I further understand that normally, the employer applies for AND PAYS FOR the work permit necessary for legal employment of a person.
However (as I previously mentioned in my first reply in this thread) from my anecdotal observations of situations involving foreigner teacher friends, some employers appear to be attempting to 'save' money by forcing a situation where the teacher employee must pay for the employer's work permit in order to retain their desired job.
It's common knowledge/no secret that in certain desirable areas (such as ÄaÌ€ Nẵng, Hội An, etc) there is currently a glut of foreigner English language teachers.
The aforementioned employers appear to be betting that foreigners such as the OP will pay the extra money to insure their ability to live in their preferred location AND be able to obtain a coveted Temporary Residence Certificate (Temporary Resident Card ~ TRC).
I've read back through some of your forum posts, Ngan Khanh, in order to understand how you might be involved in the application for work permits.
Again, definitely correct me if I am mistaken, but you appear (to me) to be an agent of sorts or "service", involved in assisting foreigners with the process of obtaining a TRC.
I have the impression that you include the work permit application process in the services you provide to the foreigner, in order for them to obtain a TRC.
Are you, in fact, an 'agent'/'service' helping foreigners obtain (pay for) TRC's, in situations where the foreigner is paying all fees, including an agent's fee and, perhaps, a fee or kickback to the employer who may or may not be providing actual employment?
If I'm totally off base, I apologize.
However, for the sake of the OP (and future casual readers) I hope to clarify IF you are suggesting that one scam is best dealt with by using another scam.
Cheers!