It is, rather, an explanation of employment policies subject to change by XYZ Corporation.
Be sure your attorney reviews your handbook before you give it to employees.
If you're undecided about whether to invest the time in creating a handbook, consider some of the other uses for a handbook in addition to communicating important information to employees.
That piece of language is commonly referred to as a disclaimer.
Just having a disclaimer, however, will not ensure that your handbook won't be considered a contract — it must be very carefully worded.