Natural HR provides the ability to create Custom employee fields which can be added to employee records click here to view an article about how to create and add Custom employee fields. 

As well as being able to use Custom employee fields when building a report, click here for how to do this, you can also use your Custom employee fields when creating a workflow with

Workflow category - Continuous

Workflow type - Changes

Option -  select your Custom employee field, in this case 'HGV driver', a Yes/No field type

This means that the workflow will be triggered whenever a user changes the status of the Employee custom field.

The Employee custom field can be referenced in the workflow step, in this case [employee_custom_4] which is the HGV driver custom field 

In the email sent to the nominated recipient, [employee_custom_4] will be displayed, Yes or No