Why GCs like it

Large commercial GCs use contingent payment language to push owner credit risk down the chain. The owner delays, the GC delays, and the shop at the bottom keeps carrying labor and material costs.

The phrase can look harmless because it is often buried in payment timing language. For a small shop, the difference between 'paid when the GC is paid' and 'paid only if the GC is paid' can be the difference between a slow check and no check.

How to push back

Do not argue the whole contract first. Ask for a simple rule: approved work gets paid within a fixed number of days, and only amounts directly tied to your own disputed work can be withheld.

If the GC insists on upstream payment language, ask for a reasonable outside date and a carveout for owner nonpayment that has nothing to do with your scope.