Introducing HR Analytics with Machine Learning is a book to demystify machine learning for non-statisticians and non-data scientists as well as to explain why and how using machine learning with employee data (and other workforce data) requires special consideration for all professionals, regardless of technical background. We understand that using data to inform decisions about human capital is paramount to the future of industry, but that very few professionals have all the domain knowledge necessary to use data to make informed decisions across the complex employee lifecycle. This is especially true when the insights to inform these decisions increasingly come from the fields of computer science and mathematics.