Temporary workers with employer-specific work permits who have lost their jobs due to the outbreak of the COVID-19 don’t need to wait for a new work permit to be issued before starting to work for a new employer. But they must get a confirmation to start working from the IRCC.
That being said, the new employer still must obtain a positive LMIA. The processing time of the new work permit for such workers is significantly reduced to 10 days and, IRCC may waive the biometrics requirement if the Service Canada office in the given location is closed.