Part I Fundamentals -- The digital twin of human -- The role of digital twins in socio-technical systems -- Part II Planning of the digital and networked work -- Enhancing the risk management for digitalization projects in the context of social technical systems -- Procedural justice and automated decision making: seven rules to design fair decision making systems -- External crowd working -- Part III Implementation of the digital twin of humans -- Intelligent assistance systems: Assistive strategies and their effects -- Work Autonomy and Adaptive Digital Assistance in Flexible Working Environments -- Individual assembly guidance -- Human factors in assembly systems of the future -- Part IV The effects of the digital twin of humans -- The digital twin of humans as a perceived threat: Negative effects on relationships with colleagues and superiors at work? -- Signed graphs in social network analysis -- How will genetic and biographic data interact to shape our lives? -- How does the digital transformation affect skills and training? A task-based approach.