Do your employees or job applicants have a good command of English? The Oxford Online Placement Test can give you rapid insight into their listening and reading skills. Do you also want to assess their spoken or written English? In that case, you can expand the test with an interview and/or written assignment, evaluated by an English examiner.
Do you teach in higher education? Take a look at the English language proficiency tests for teachers.
The test provides rapid results: you will know the level at which your candidates can operate and their need for additional language training as soon as they have completed the test.