You eligible family member like spouse can apply for an EAD.

An approved EAD allows to work or business to the secondary applicant (spouse).

The primary applicant, may take up a part-time job or start a business as long continue working for the employer who filed for the Green Card.

Application for EAD(Form I-765) can be filed concurrently along with I-485 or any time after that as long as I-485 application is pending. The following documents must accompany the form:

• Fee of $380 payable by check or money order (Currently the Form I-765 does not reflect this change, however you must comply by the new rules or your application will be rejected)
• 2 passport photographs taken within 30 days of filing the application and as per the new guidelines.
• Copies of both sides of your I-94 card
• Copies of both sides of your EAD if you already had one.

Depends on the service center, EAD approval may take few weeks to few months to get approval.

For those who are secondary applicant and does not have a Social Security Number or not allowed to work can apply for Social Security Number , after receiving the EAD Card.