Option to have irregular worker as a column in Custom Reports

Please could we have the ability to add a column which identifies those employees we have selected as irregular workers during the new starter setup process. Similar to how currently there is one for Directors and Apprentices. This would make it easy to run a report and identify exactly which employees are irregular workers, for example at end of tax year, when we like to check with clients if these employees are still to be employed or should be made a leaver before the tax year ends.