I am in 4th year of H1 with an approved I140. My spouse currently works on H1. We are thinking of changing her status to H4 and thus use EAD to work. Her H1 is valid for another or so. We can file for COS from h1 to h4 & h4 ead simultaneously, although first the status will get changed and then the EAD processing will start. 1. Can she continue to work while the H1 to H4 is in process (not premium processing)? 2. There may be a lag time once the COS for h1 to h4 is complete but EAD yet to arrive. Can she work during that period as well? 3. If I change job, can my spouce apply for EAD using my I140 from previous employer?