If he is one of the higher ups, I'm not too sure.
But if he's any other normal employees, for his info, he will be
breaking the law.
He, can at his own risk source out the hashed passwords stored at
one of the servers, or crack the admins' passwords and gained root
access to the Windows NT server, if that's the only server that
your company has.
If there are more servers than this, he will have to cross
department to get the user ids and passwords, to access the
different files stored for different departments. Every department
has their own access permissions and only those from that
department can access it. Usually higher ups are able to view
almost everything except editing it.