The OECD has issued a release welcoming Costa Rica as its 38th member. --- OECD welcomes Costa Rica as its 38th Member 25/05/2021 - Today Costa Rica has formally become an OECD Member, the 38th country to do so in the Organisation's 60-year history. Costa Rica has now completed its domestic procedures for ratification of the OECD Convention and deposited its instrument of accession. This brings to a successful conclusion an accession process that began in April 2015. OECD Member countries formally invited Costa Rica to join the Organisation in May 2020, following a five-year accession process during which it...