First time Candidates are required to sit all four sub-tests; reading, writing, listening and speaking.
If you are required to re-sit the OET please contact the Regulatory Authority that governs your profession to see if they allow you to sit individual sub-tests, or if all four sub-tests are required in one sitting.
Some professions require Candidates to pass all four sub-tests in one sitting; meaning if you fail one or more sub-tests you are required re-sit all 4 sub-tests in one sitting.
To ensure you’re up-to-date with your individual requirements, please check with the Regulatory Authority that governs your profession.
Please visit the OET website for links to the organisations that recognise OET.