Generally, job insecurity reflects a threat to the continuity and stability of employment as it is currently experienced. Recently, the topic of job insecurity has been attracting growing attention, especially in the light of Industry 4.0. seeing that digital transformations may lead to labour displacement or substitution. Until recently, the majority of research has been focused on consequences of job insecurity, with relatively less research being devoted to finding out how job insecurity could be mitigated. Trying to close the gap, the paper introduced sustainable HRM practices as means for reducing job insecurity. To this intent, quantitative data were collected in Eastern Europe. The results support the idea that organisational communication, employee participation, employee training, procedural justice, and supervisory support are the main practices leading to a lower job insecurity. The paper has strong practical implications as the results support the idea that organisations can implement sustainable HRM practices for making the employees feel less insecure.