Fonterra is targeting contractors that work closely with the dairy giant.
Fonterra has demanded a fresh 10 percent across the board saving from its suppliers and contractors.
The "at least" 10 percent saving figure has come from a Fonterra letter leaked to journalist Duncan Garner by a supplier.
In the letter, Fonterra says it needs to be more resilient, including a review that has seen staff sacked and now the number of contractors may be reduced.
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