Nonverbal communication and oral communication are almost always combined. You can also combine oral and written communication (as in a presentation) or even oral, nonverbal, and written communication. Using combined channels is appropriate when the message is important and you want to ensure that employees attend to and understand it.

You can send an email message to give the receiver time to think about it, then follow up with a personal visit or telephone call to talk about it. Managers often formally document a face-to-face meeting, particularly in a disciplinary situation.