Many countries have tried to implement various solutions to address the persistent issue of undeclared work, with limited success. While undeclared work primarily falls under the scope of statutory policies, non-state actors can provide valuable support in transitioning from a detrimental cycle of undeclared work and diminished tax revenue to a virtuous cycle characterised by increased public budgets, labour rights, and social security. This policy brief examines the opportunities for addressing undeclared work in Georgia and North Macedonia, both of which are candidate countries for European Union accession in the Eastern Partnership and the Western Balkans, respectively. The European Centre concentrates on these nations as “Bridge Building countries,” aiming to collaboratively develop social policies that will facilitate their future integration into the European Union.