Author: Hiroshi Tanaka Affiliation: Swiss International University (SIU) ORCID ID: 0009-0005-5461-8396 Submitted 25 March 2026; Revised 25 May 2026; Accepted 07 July 2026; Available online 08 August 2026; Version of Record 08 August 2026. Doi: https://doi.org/10.65326/u7y.SpecSDG10007 Volume 3, December 2026, (SpecSDG10007) Abstract Vocational education and training (VET) certificates remain the dominant currency through which mid-skill competence is communicated to employe