These are questions that should be posed to your employer's immigration attorney. If your employer does not have an immigration attorney, you should consider hiring your own.
Answers provided by Ksenia Maiorova, Esq. on Avvo.com are of a general nature and do not constitute legal advice.
The EAD application can be filed along with your wife's application to extend her L2 status. In turn, the application to extend her L2 status can be filed along with your employer's L1A petition. File soon (no more than 120 days prior for the EAD application, however), and hopefully the new EAD will be issued so that there is no gap in validity between the current EAD and new EAD. However, if the current EAD expires, your wife must discontinue her employment until the new EAD is issued. Consult with your current immigration attorney for case specific advice.
The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter, nor should it be viewed as establishing an attorney client relationship of any kind.
Working without EAD is unauthorized employment.
This response is general in nature and cannot be construed as legal advice, given that not enough facts are known. Any comments offered on Avvo are of a general nature only, and are not meant to create an attorney-client relationship. You are encouraged to seek independent and private counseling for a complete review of your case.