According to the Article 53 of the Employment Service Act. When foreign professional worker has to transfer to a new employer, the new employer(s) shall apply for permit. And the new employer shall submit upon such application the relevant document(s) certifying the termination of the previous employment.
Otherwise, the employer should be attention the processing time when the foreign professional workers will transfer the employer. The processing time for online must have 7 days, but paper work should have 12days. It not only avoids the duration for foreign unemployed so early, but also for new employers with the duration of the employment permits.