The document discusses the true costs an employer incurs to employ someone beyond just their salary. It estimates that total employment costs are around 1.5 times the amount of the employee's salary. Factors that increase costs include national insurance payments, holiday pay, pension contributions, office space, equipment, utilities, and internal support services. For an employee with a £30,000 salary, the first year employment costs are estimated to be around £51,182 or 1.7 times the salary. Demonstrating an understanding of these hidden employment costs in an interview can help an applicant stand out from other candidates.