The fluent labour resources transfer within an integration association affects not only the level of wages or employment, but also causes complicated, complex consequences for the labour donor countries. The purpose of the study is to assess the impact of labour resource spillovers on the level of labour productivity in the EAEU countries. Using correlation analysis, the paper verifies the hypothesis of the reverse spillover effect associated with the return of labour migrants to their home countries. It contributes to labour productivity growth in the EAEU countries. The results show statistically significant (multidirectional) relationship between the variables under study – labour migration affects the level of productivity in the EAEU countries. Indeed, the growth of labour migration positively affects the level of labour productivity in Armenia and Belarus. However, in Kazakhstan and Kyrgyzstan those is negative one. The research results can be used to develop a strategy of socio-economic development of the EAEU countries considering the parameters of external labour migration.