A skills assessment is required mainly for applicants applying under the Direct Entry stream of the Subclass 186 visa. This assessment confirms that your qualifications and work experience meet Australian standards for your nominated occupation. It is conducted by an authorised assessing body. For applicants applying under the Temporary Residence Transition (TRT) stream, a skills assessment is usually not required, as they are already working in Australia in their nominated role and have proven their skills through employment.