Ephesians 6:5-9 is a relatively simple and clear yet difficult passage. It's difficult because it's one of the places where Paul could have clearly condemned slavery. He could have ignited a revolution in the Roman world, but he doesn't - or does he?
This is a practical passage, and it definitely has applications you can "work with." But if all we learn from this passage is how to be better workers or better bosses, we may have missed the point.