This document outlines the development of the Global Scale of English (GSE) proficiency framework for measuring workplace English skills. It began in 2006 with the Pearson Test of English Academic and expanded in 2012-2015 to include learning objectives targeting professional English. Research with employers found they wanted skills-based assessments beyond general English certificates. The GSE framework maps learning objectives to specific job tasks in industries like nursing and IT. It was validated by teachers and is now recognized in the CEFR Companion Volume and by accreditation organizations. The framework provides resources for teachers to identify objectives for learners' proficiency levels and job skills.