What is the ostensible subcontractor rule?
The ostensible subcontractor rule deems a subcontractor to be an affiliate of the prime contractor if the subcontractor performs the primary and vital requirements of the contract and the prime is unusually reliant on the subcontractor. When this rule applies, the subcontractor's size is combined with the prime's to determine size standard compliance. This rule is frequently cited in size protests involving small prime/large sub arrangements.
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