Occupational health and safety officers coordinate health and safety systems in an organisation. They identify hazards, assess risks to health and safety, put appropriate safety controls in place and provide advice about accident prevention and occupational health to management and employees. With experience and sometimes further training, occupational health and safety officers may become auditors, who inspect a workplace's level of compliance with health and safety standards.

Occupational therapists assess and treat people who, due to illness, injury or circumstance, are limited in their ability to undertake everyday activities. They assist people to regain lost functions, develop their abilities and social skills, as well as maintain and promote independence in their everyday lives to enhance health and wellbeing.

Office administrators undertake a range of functions to make sure the administration activities within an organisation run smoothly. They may be responsible for the management of human resources, budgets, accommodation and property facilities and records. These functions can be performed at various levels ranging from junior through to upper management.

Operating theatre technicians prepare and maintain operating theatres and equipment, assist surgical and anaesthetic teams during operations, and provide support to patients in recovery.

Optical dispensers interpret optical prescriptions and fit and service optical appliances such as spectacle frames and lenses.

Optical mechanics make precision optical parts; grind, polish and surface prescription lenses and contact lenses; and fit lenses to spectacle frames.

Optometrists perform eye examinations to determine the presence of vision problems and other eye conditions and disease. They treat or manage these problems by prescribing glasses, contact lenses, optical aids, vision therapy, medication (in the form of eye drops) or referral to an eye surgeon when required.

Oral and maxillofacial surgeons conduct surgery and relevant procedures to prevent disease and infection in the mouth region. They normally work within a dental practice or medical institution and those working in a 24-hour capacity may be on call.

Oral health therapists diagnose dental decay and gum diseases, work together with dentists to provide routine oral health care for children and adults, and also help to promote oral health and preventive dental practices among school children and the broader community.

Orientation and mobility specialists teach people who are blind or have low vision to move around their environment safely and with confidence. They usually work on a one-to-one basis.

Orthodontists specialise in correcting misalignments of the teeth and jaw. They provide non-surgical treatments to alleviating a number of problems, including speech defects, chewing difficulties and poor oral hygiene.

Orthoptists detect, diagnose and treat disorders of the eye and associated eye movement and vision problems.

Osteopaths diagnose, treat and provide preventative advice about disorders that affect the body's musculoskeletal system, using manual techniques to alleviate stresses and dysfunction to improve the body's function.

An outdoor adventure leader instructs and guides individuals and groups undertaking adventure activities in a variety of outdoor locations. Activities may include bicycle touring, bushwalking, canoeing, caving, cross-country skiing, horse trekking, rafting, rock climbing and sailing.

Packers weigh, wrap, seal and label meat, fruit, vegetables and other products by hand. They are also often involved in filling orders and sending out goods, especially if they work mainly with non-perishable products.