Q: I am in H-1B status and my spouse is in H-4 status. If I use my AOS EAD to work, what happens to our status?
A: Both you and your spouse would no longer be maintaining your nonimmigrant status. You would both be in lawful status based on your pending adjustment of status application. This same is true for L-1/L-2 couples. https://www.rnlawgroup.com/common-questions-regarding-use-of-aos-ead/