Fernández-Costales Muñiz, Javier. 2026. “Substantial Modifications of Working Conditions and Transfer of Undertakings: On the Choice of the Appropriate Procedural Route for Bringing a Claim: Commentary on Supreme Court Ruling 681 2026 of 21 July”. Revista De Trabajo Y Seguridad Social. CEF, no. 495 (November). https://doi.org/10.51302/rtss.2026.25596.