"The Canadian Language Benchmarks (CLB) standard is a descriptive scale of language ability in English as a Second Language (ESL) written as 12 benchmarks or reference points along a continuum from basic to advanced. The CLB standard reflects the progression of the knowledge and skills that underlie basic, intermediate and advanced ability among adult ESL learners." - CLB, 2012
https://www.canada.ca/content/dam/ircc/migration/ircc/english/pdf/pub/language-benchmarks.pdf
"An essential skill is a necessary developed ability or capacity acquired through deliberate, systematic, and sustained efforts to smoothly and adaptively carryout complex activities or job functions involving ideas, things, and/or people....
The Government of Canada and other national and international agencies have identified and validated 9 key essential skills for the workplace." - Skills Canada
https://skillscanadanl.ca/programs-events/essential-skills/