In addition to serving as an internal company branding and onboarding tool, think of your employee handbook as a living being that needs regular care and feeding. It doesn’t know that your social media policy changed when IT introduced “bring your own device,” and it certainly hasn’t kept up with ever-changing laws regarding marijuana use, both medicinal and otherwise.
How often you update your company’s employee handbook is ultimately up to the department that owns the document — usually HR, with heavy input from legal — but at minimum we suggest doing a thorough review at least once a year.