The human resource hiring manager or recruiter might ask you to provide a summary of your work history. Describing a stable work history suggests that you are committed to your employer and while your previous duties may not have involved human resource related tasks, you probably have some transferable skills that would be helpful to you in an human resource assistant role.

Example:

If you have a customer service background, it shows that you are capable of fielding inquiries from a variety of people and sources, as well as handling competing priorities.