In the frame of the POW-BRIDGE, we have conducted eight case studies and published eight country reports on Austria, Hungary, Italy, North Macedonia, Poland, Serbia, Slovakia, and Slovenia. The country reports present how the Posting of Workers Directive interplays with national rules and regulations on social security, health insurance, temporary agency work, and company law. They identify existing gaps in implementation and practice from the perspective of public authorities, social partners and employers and provide recommendations on how to address these gaps.