Can one continue on L1B or L1A after I140 is approved?

Once the I140 is approved can one continue on L1B or L1A in US? Can the spouse continue in corresponding L2 and apply for EAD and continue to work if needed?

Any response will be appreciated. I have been trying to find the answer to this for a while. Thank You.

Even if I-140 is approved, a person can still work for 7 years of L-1A and 5 years on L-1B. There is no extension provided after that (unlike H-1B). The spouse on L-2 EAD can also work until above terms are completed.