Subject: Is Employment Authorization enough?

From: "LAD's status" <[email-masked]>
Date: Wed, 15 Dec 93 15:26:11 CST

My wife as an LAD filed I-485 and got a receipt in August.
Because her F-1 practical training period will soon be expired, 
she applied the Employment Authorization card from local INS
recently.

My question is:

Is it enough to keep her legal status untill she get approval of
the PR? Or should she apply the Volutary Departure at the same
time?