Poor cash flow on a construction project is MOST often caused by:

解析

The structural cause is timing: wages and material invoices fall due weeks before the owner pays a progress billing, and retention delays part of the receipt further still, so cash drains even on a profitable job. Taking an early-payment discount does consume cash, but it buys a return and is a choice rather than the cause. Monthly billing lengthens the gap and makes the problem worse, without being its origin. Withholding retention from subs conserves the contractor's cash rather than draining it.