It's an independent entity who agrees to supply to services, goods, materials, equipment, or personnel that meets stated requirements. A contractor may work for a company, but they aren't a company employee. Instead, they work according to an agreed-upon contract for a set period of time.
The responsibility of a contractor in construction is the execution of the work activities that are required for the completion of the project. He contractor also appoint the subcontractor, who have special expertise, to execute certain parts of the project that cannot be constructed by the contractor.
The average contractor salary in Australia is $97,500 per year or $50 per hour. Entry level positions start at $78,000 per year while most experienced workers make up to $163,650 per year.