Abstract: Based on the survey data of the new-generation migrant workers in the southwest ethnic areas in 2023, this article employs the Probit model for empirical analysis to investigate the influence of platform gig employment on the overwork of the new-generation migrant workers. Distinct from traditional employment patterns, this article takes the gig economy on digital platforms as the starting point to deeply explore the issue of overwork in the backdrop of the digital economy. The research findings indicate that platform gig employment significantly elevates the probability of overwork among the new-generation migrant workers, and this result remains valid after a series of robustness tests. The heterogeneity analysis reveals that the intensification of overwork due to platform gig employment is more prevalent among individuals with low family participation and low digital skills. The mechanism analysis indicates that flexible working arrangements and social security are significant influencing mechanisms that exacerbate overwork in platform gig employment. Further discussions uncover that platform gig employment has a significantly positive impact on the depth of overtime for the new-generation migrant workers. In light of this, it is essential to formulate targeted countermeasures to enhance the protection of rights and welfare benefits for workers in the platform gig economy, with the aim of facilitating the healthy and orderly development of the platform gig economy.

Key words: platform gig employment, overwork, new-generation migrant workers, flexible working, social security