Quick follow up question on employee handbooks

https://privatebin.net/?789a7359485e14af#6MgJ9Dzyqi5aG6mh5vaCp6rahyJB5KzzyZieR6URFCM3

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