The metaverse is emerging as a digital ecosystem that is transforming the way people interact, work and do business. However, its rapid growth poses challenges to environmental, economic and social sustainability. This research explores the interplay between linguistics, environmental economics and human resource management (HRM) in supporting sustainability in the metaverse. Using a mixed-methods approach, this research analyses: (1) the role of linguistic strategies in shaping sustainability discourse in virtual environments, (2) the economic impact of green initiatives in metaverse-based ecosystems, and (3) the contribution of HRM in implementing sustainable work practices in the digital world. The results show that strategic ecological communication, economic incentives for virtual carbon neutrality and green HR policies play an important role in achieving sustainability in the metaverse. This study provides insights for policy makers, companies and HR professionals to use the metaverse as an environmentally and socially sustainable space.