Quick follow up question on employee handbooks

https://stephenwtcf774.quillnesty.com/posts/how-to-choose-a-law-firm-in-omaha-what-to-ask-before-you-hire-2

Quick follow-up question on employee handbooks. How often should a small business update theirs? Ours was written in 2019 and I suspect a lot has changed since then, especially around remote work