What is employee happiness? In jargony terms, it's a positive mindset enabling emotional engagement with one's company. Put simply, it's that pleasing, content state of being that makes an employee willing to "go that extra mile" while running with an idea or problem-solving. It's that special something that makes it possible for an employee to, say, write a blog post about employee happiness without rolling her eyes. You might say that employee happiness is the piece de resistance to employee Engagement (yes, that's Engagement with a capital E).