Lehdonvirta is one of the world's most cited authors on gig work and the platform economy. He was the principal investigator of iLabour, a major research project on online freelancing and the gig economy, funded by the
European Research Council. He is the creator (together with
Otto Kässi and
Fabian Stephany) of the
Online Labour Index, an
economic indicator and international reference for the measurement of the global online
gig-economy. He also led research projects on online labour markets' effects in rural areas, crowd workers' skill development, and changing online worker livelihoods during the
COVID-19 pandemic. Lehdonvirta's research on platforms, marketplaces, and digital commerce is summarised in
Cloud Empires: How Digital Platforms Are Overtaking the State and How We Can Regain Control, published by MIT Press and translated to Italian by Einaudi. The book was announced as a finalist for a 2023 PROSE Award by the Association of American Publishers (AAP). Lehdonvirta's earlier research dealt with the history and politics of
Bitcoin and
blockchain. His research on virtual goods, virtual consumption and digital games is summarised in
Virtual Economies: Design and Analysis, co-authored with
Edward Castronova, published by MIT Press and translated to Japanese and Chinese. Lehdonvirta's recent research focuses on the
geopolitics of digital infrastructures, such as cloud data centres and
GPUs. == Policy work ==