Alert Thresholds are used to notify users of specific events before or when they occur.
When an alert threshold is met, a message is sent or displayed to the specified users when the related message is enabled. Brian, for example, may get a notice when a worker’s end date is approaching.
![screenshot of the SAP Fieldglass message center showing an alert listed in red among the other message types displayed](/service/media/topic/b9e8bd30-436b-4efc-8e4d-25501ea658aa/FG200_2311_en-US_media/FG200_2311_en-US_images/AlertThreshold.png)