The EU has been studying mandatory chip implants since 2017 and has an in depth published study examining the technology and the barriers needed to overcome in order to chip their population.
The publication is titled:
DIRECTORATE GENERAL FOR INTERNAL POLICIES POLICY DEPARTMENT A: ECONOMIC AND SCIENTIFIC POLICY The Use of Chip Implants for Workers
The Abstract of the Study reads
Abstract This paper briefly explains the technology of RFID chip implants; explores current applications; and considers legal, ethical, health, and security issues relating to their potential use in the workplace.
Read More: Mandatory Chip Implants for EU Citizens Published Study