As employee relocation requires substantial investments, it is vital for companies to ensure these efforts generate sufficient returns. This article examines key factors influencing employee relocation return on investment (ROI), including costs, retention rates, and productivity impact. We outline ROI calculation methods and their limitations, along with case examples demonstrating effective practices. The benefits of relocation are noted, highlighting how strategic workforce transfers provide access to global talent, expand operations, and build agile teams. By understanding the critical factors affecting relocation ROI, organisations can make informed decisions that maximise their human capital returns. While standard ROI measurement models are still evolving, this analysis aims to advance understanding of optimising relocation investments.