Answered by Sayyidi Habib Umar bin Hafiz (may Allah protect him and benefit us by him)
How can women perform their duties at home if they also have to go out to work?
They can do this by only going out when it is necessary to do and by wearing modest attire when they do so. They should follow the example of the daughters of the Prophet Shu`ayb, whom Allah mentions in the Qur’an: He (Musa) found at a distance from them two women keeping back (their flocks). They refused to mix with the men but rather waited until they had finished watering their flocks. When their father sent one of them to Musa, Allah describes her as ‘walking shyly.’ When there is no longer a necessity for them to be out, they should return to attend to their duties in the house.
 Al-Qasas, 28:23