How to "use" EAD?

Many people talk about "use" EAD. If one receives EAD, how to
"use" or "not use" EAD?

I understand how to "use" AP. If one visits China and come back
without applying visa, but show his AP, he has "used" AP. But
confused on "use" EAD.

所有跟帖： 

• 比如你找到一份工作，法律要求你填I-9，EAD就有用了 -pcbme- ♀ (0 bytes) () 09/24/2005 postreply 14:59:30

• 回複：How to "use" EAD? -wangqq- ♀ (95 bytes) () 09/24/2005 postreply 15:01:04

• 回複：回複：How to "use" EAD? -Helppp- ♀ (166 bytes) () 09/24/2005 postreply 15:20:15