Hey there, SM79.
Thanks for reaching out to the Community for support. I'd be happy to provide some information.
At this time, the option to add an alert on the employment anniversary date of each employee, isn't available in QuickBooks. I suggest looking for third party app in the QuickBooks app store. I can see how being able to add an alert would be something you'd like to see, so I recommend leaving feedback for our developers.
If you have any other questions, feel free to reach back out.
