Fairness
Acting fairly and acting uniformly are different, and only one enables you to successfully deal with diversity in your workplace. Don't be fooled into thinking that by treating everyone exactly the same, you are demonstrating a fair attitude and respecting diversity. Instead, treat people fairly and respect the differences that make them who they are. For example, don't schedule a mandatory meeting that falls on a religious holiday -- it demonstrates an insensitivity and may breed resentment and foster feelings of being left out in any employees that are unable to attend.