a person or company who is paid to do part of the work of another person or company:
• Always check whether a contractor is using subcontractors, and who is liable if things go wrong.
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subcontractor UK US (also sub-contractor) /ˌsʌbkənˈtræktər/ US /-kɑːntrækɚ/ noun [C] MANAGEMENT, LAW
► an outside person or organization that does work for an organization that might normally be done within it: »
I've had to employ several subcontractors to help complete the work.
Financial and business terms. 2012.