Nowadays, artificial intelligence (AI) and its technologies have shaped and changed human resource (HR) and payroll systems by automating many routine and repetitive tasks, resulting in a noticeable positive impact on improving employee interaction, streamlining HR processes, and increasing HR efficiency. This chapter analyzes how conversational AI and chatbots can change HR processes, handling common headaches like manual inefficiencies, payroll mistakes, compliance risks, and communication gaps. Additionally, we discuss the core technical components that chatbots are built upon, such as natural language processing (NLP), common conversational systems, and deep learning (DL) while considering the context of HR and payroll systems. Using existing applications of HR and payroll chatbots, we highlight the advantages and challenges these companies have faced. Finally, we explore the limitations, concerns, and ethical dilemmas that the use of chatbots in HR systems may raise.