As the Plaintiff's attorney, are you allowed to contact current employees of a corporate Defendant?

The answer is governed by Rule 4.2 of the Georgia Rules of Professional Conduct.

A few days ago I needed to file a declaration on behalf of my client in federal court. The question was whether I needed to drive to meet him in rush hour Atlanta traffic or whether I could use an e-signature after he had seen the document and given me his permission to sign it.