No, there is nothing confidential about an employee's resume. The very nature of a resume is that it is essentially a public document: sent to recruiters, to potential employers, often posted on line, sometimes sent out in mass or cold mailings, etc. If something is by its nature sent out to the many people, it lacks confidential status. That's the law: it is posisble that internal company policies may make the resume confidential, since companies have the right to set their own policies or rules about who may see what information. So this could be a violation of company policy but is not illegal.