[jkmcf]

In my experience, you can grow and retain quality people with compensation, practices, and other incentives, but you won't make them passionate about their job this way.

There's passion about what you do (passionate about their field, tools), and passion about what you are doing (healthcare, education, making money). These are high energy, all-in types who live their jobs. They are also few in numbers.

You can hire and fire based on displayed passion, but I'm not sure it can be taught. They either have it or they don't.

Also, don't confuse passion with work ethic, which is (probably) equally valuable, but more of a character trait that can be applied to many different things.