Insurance officers carry out clerical and other functions associated with insurance transactions.

Integrated ratings carry out maintenance and lookout duties on the decks and in the engine rooms of merchant ships.

Intelligence analysts evaluate information from a variety of classified and unclassified sources. This information is often incomplete, contradictory and can vary widely in terms of reliability. Depending on their background and qualifications, an intelligence analyst may examine a diverse set of countries, issues (such as terrorism) and cultures. Intelligence analysts working for the Department of Defence specialise in a number of areas depending on their training, qualifications and agency employment.

Interior decorators plan and implement decoration schemes for homes, offices, shops, hotels and venues.

Interior designers design and supervise the construction or redevelopment of building interiors.

Interpreters use their knowledge of languages and cultures to convert a spoken or signed language into another spoken or signed language, usually within a limited time frame and in the presence of the participants who need to communicate. Interpreters usually specialise in a particular language combination (French and English, for example) and may also specialise in a particular subject area, such as commerce, law, health, science, technology or welfare.

Interviewers assist market researchers to collect information by speaking with people face-to-face or over the telephone and recording (on questionnaires or in reports) the answers or details given by interviewees about the market research subject.

Inventory and supply officers receive and dispatch goods, manage stock levels and record stock movement. With experience, and sometimes further training, it is possible to become an inventory control manager or supply manager.

Jackaroos (male workers) and jillaroos (female workers) undertake a range of activities on cattle and sheep stations.

Jewellers design and make jewellery and small objects using a wide range of materials, including metals, stones, woods, plastics and fibres. Jewellers may specialise in making particular types of jewellery (such as rings) or in using specialised techniques (such as enamelling, engraving, anodising or casting).

Jockeys ride racehorses at race meetings, in trials and for exercise.

Joiners cut, shape and fit timber parts in workshops or on-site to form structures and fixtures that are ready for installation. This could include built-in robes, kitchen and bathroom components or staircases.

Journalists write and edit news reports, commentaries, feature articles and blogs for newspapers, magazines, radio, television and websites, including online publications. Journalists usually start as cadets and report routine events. In newspapers and on radio and television, most reporters are expected to be 'generalists' who are able to cover almost any topic of interest. With experience, and sometimes further training, journalists may perform a variety of tasks according to their area of specialisation.

Judges preside over civil and criminal proceedings in courts of law, ensuring trials are run fairly and according to the rules of law and evidence.

Kiln operators use solar, gas or steam kilns or ovens to dry and season clay, ceramic, glass and wood products. They control the temperature, heating times and ventilation in the kilns and may also carry out inspections of the equipment to maintain performance.