I work at a secular company, and they don't claim to be anything other than that. Therefore, I do not expect them to run the company based on Biblical principles. I am not surprised when I receive humanistic advice from the administration. However, I do not check my Christianity at the door when I arrive for work in the morning. As a Christian, I am to look to the Bible for counsel in all situations (even the workplace). The passage I've been working on with my Sunday School class came to mind immediately.
Trust in the LORD with all your heart, and do not lean on your own understanding. In all your ways acknowledge him, and he will make straight your paths. Be not wise in your own eyes; fear the LORD, and turn away from evil. It will be healing to your flesh and refreshment to your bones.
Another good reason to (constantly) be putting the truth of God's Word in your mind.