Abstract
This article illustrates that the employer side in labour markets is often significantly more concentrated than the employee side. While this monopsony power contributes to a reduction in wages, labour shortages have a counteracting effect, which companies sometimes address through agreements on wage ceilings or non-poaching clauses. Our article provides an economic assessment of these anti-competitive practices, focusing on an emerging labour market where increasing demand for labour meets a limited supply: the labour market in the hydrogen economy.