The best way to make employees happy is to set realistic goals and achieve them. The big job is to make sure those small steps are pointing us in the right direction and demonstrate at the end of the year that they all add up to something pretty great.
I think what travelling has done for me and for many generations of my family - my grandmother was a great example - it's really highlighted for me how similar we all are and how many values we all share as people on this planet.