NPT (Non-Productive Time) is any period when crews or equipment are on-site but not performing billable work. This includes weather delays, equipment breakdowns, or waiting on materials. Subcontractors often absorb NPT costs unless contracts clearly define standby rates.
Non-Productive Time
Related Terms
Blanket Authorization
Cash FlowA standing approval that allows subcontractors to perform recurring work up to a set dollar limit without requiring a new work order each time. It simplifies billing and reduces administrative delays on long-term contracts. Subcontractors should confirm spending thresholds in writing before mobilising crews.
Settling System
Cash FlowThe process a prime contractor or operator uses to review, approve, and finalise invoices before releasing payment to subcontractors. Understanding the settling system helps subs forecast cash flow and avoid payment delays. Timelines vary widely between clients, so confirm the cycle before mobilising.
Master Default Order
Cash FlowA court order declaring a prime contractor in default on financial obligations, often freezing payments to subcontractors. It signals serious insolvency risk and can delay or eliminate outstanding invoices. Subcontractors should file liens immediately upon receiving notice.
Rule 144a
Cash FlowA U.S. securities regulation allowing large private companies to raise capital without a public stock listing. For subcontractors, it signals a major client may have access to significant private funding. This can affect contract stability and payment capacity on large projects.
Convertible Notes
Cash FlowShort-term loans that convert into equity if not repaid by a set date. Subcontractors may encounter these when seeking growth capital to fund equipment or crew expansion. They carry risk: lenders can become part-owners of your company.
Working Capital
Cash FlowThe difference between your current assets and current liabilities — essentially the cash available to keep operations running. For subcontractors, it covers payroll, fuel, and equipment costs while awaiting client payment. Tight working capital is a common risk when payment terms stretch 60–90 days.
Latest Cash Flow News
Trump Administration Appeals Ruling Blocking Hudson Tunnel Funding Freeze
The Justice Department has appealed a federal court ruling that barred DOT from withholding funds on the $16B Hudson Tunnel Project, though reimbursements and construction continue for now, ENR reports.
2 days agoCash FlowMammoth Energy Still Owed $20M for 2017 Puerto Rico Storm Work
Nearly nine years after Hurricane Maria, Mammoth Energy subsidiary Cobra Acquisitions is still collecting on Puerto Rico power restoration invoices, with $20 million outstanding as of June 2026, OK Energy Today reports.
18 days agoCash FlowGordie Howe Bridge Opens to Pedestrians as Vehicle Traffic Begins
The Gordie Howe International Bridge between Windsor and Detroit opened to pedestrians and cyclists this week, following last week's opening to motorists, according to a Canadian Press report via Daily Commercial News.
29 days agoCash FlowTalos Energy Takes 50% Stake in Repsol's Deepwater Mexico Block
Talos Energy will pay up to $50 million to acquire a 50% working interest in Repsol's Block 29 offshore Mexico, targeting FID in 2027 on a discovery holding over 200 MMboe.
1 month agoRelated Guides
What Happens to Subcontractor Billing When a Project Stalls, Goes Over Budget, or Never Gets Commissioned
You did the work. The project was cancelled, shelved, or never activated. Here is what subcontractors need to know about billing rights, legal remedies, and how to get paid when no one wants to discuss the invoice.
Cash Flow GuidePost-Completion Warranty and Punch Work: Protecting Your Margins After the Job Ends
Warranty walks, punch lists, and post-completion callbacks eat into subcontractor margins. Learn how MSA warranty clauses work, when you can push back on mobilization costs, and how to document your way out of disputes.
Cash Flow GuideMechanic's Lien Rights for Subcontractors: What to Do When You're Not Getting Paid
A practical guide to mechanic's lien and materialman's lien rights for oilfield and construction subcontractors in Texas, Oklahoma, and Alberta — deadlines, filing steps, and leverage tactics.
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