Key Takeaways
- CPKC signals workers can strike after 72-hour notice expires, potentially stalling rail positioning for containers already cleared through CBSA.
- PARS release prior to payment assumes containers exit the terminal within carrier free-time; rail delays push dwell charges onto the importer even when the CAD is accepted.
- Switching to truck drayage mid-stream requires a new cargo control document and can force a second CBSA transaction if the original PARS was rail-specific.
- Importers with RPP bonds should confirm their broker has alternate routing SOPs ready before the notice period closes.
Strike clock starts for CPKC signals workers
Canadian Pacific Kansas City received formal 72-hour strike notice from the International Brotherhood of Electrical Workers, representing roughly 300 signals and communications employees across the railway's Canadian network. The notice allows legal strike action to begin once the countdown expires.
For importers who clear ocean containers through Vancouver or Montreal and rely on CPKC intermodal rail to inland destinations, the risk is not customs hold. CBSA will process your CAD (Commercial Accounting Declaration) and grant release prior to payment under PARS exactly as usual. The problem is what happens after release: containers sitting on chassis at the terminal, cleared but immobile, while per-diem and storage clocks run.
PARS release does not equal physical movement
Pre-Arrival Review System filings allow goods to clear CBSA before they physically arrive at the first point of destination in Canada. Importers using customs brokerage services for intermodal shipments typically file PARS 24 to 48 hours before the vessel berths, receive release confirmation within hours of the CAD being accepted, and expect the container to leave the terminal on CPKC rail the same day or next.
When the railway stops moving freight, that entire assumption breaks. The container is legally released, your RPP bond has been debited for estimated duties under the CARM Client Portal, and CBSA considers the transaction complete. But the box stays at the terminal, accruing daily storage fees and railway per-diem charges until CPKC resumes service or you arrange alternate transport.
Most ocean terminals in Vancouver and Montreal offer four to five days of free time before storage charges begin. A strike that runs a week will push every container past free-time, and importers absorb the cost even though the delay has nothing to do with customs clearance.
Switching to truck mid-stream is not automatic
If you decide to pull containers by truck instead of waiting for rail service to resume, the terminal and your freight forwarder must amend the cargo control document to reflect the new carrier. When the original PARS entry named CPKC as the bonded carrier, some terminals require written confirmation from the broker that CBSA release remains valid under the substituted mode.
This is not a second customs clearance, but it is additional paperwork that takes time. Terminals will not release a container to a trucker whose name does not match the cargo control number on file. If your broker filed the CAD with CPKC rail routing and you now want truck drayage, expect a one-day delay while everyone coordinates the handoff.
For temperature-controlled or time-sensitive shipments already sitting in a Montreal sufferance warehouse waiting for onward rail, the decision tree is shorter: pay for truck drayage now or accept the storage cost and wait.
CUSMA origin claims and HS classification are unaffected
Strike action by railway workers does not change how CBSA adjudicates your Commercial Accounting Declaration. If you claimed CUSMA preferential tariff treatment at the 6-digit HS level, that claim stands regardless of whether the freight moves by CPKC rail, truck, or sits idle. The same is true for SIMA (Special Import Measures Act) subject goods: anti-dumping and countervailing duty margins are applied at the time of CAD filing, not at the moment of physical pickup.
Importers sometimes worry that a logistics disruption will trigger a CBSA verification or delay release. In practice, CBSA's release decision is divorced from carrier performance. The Agency examines commercial invoices, packing lists, certificates of origin, and HS classification. Once the CAD is accepted and release prior to payment is granted, the file closes on CBSA's side. Any subsequent delay is a commercial matter between you, the terminal, and the railway.
RPP bond sizing and cash-flow exposure
If you hold a Release Prior to Payment bond under the CARM Client Portal, the bond secures duties and taxes for goods released before final accounting. The bond does not cover terminal storage, railway per-diem, or demurrage. Those are invoiced separately by the terminal operator or the railway, and they appear on your freight forwarder's statement of account, not on the CBSA K84 monthly settlement.
Importers who run tight RPP bond minimums (CBSA requires financial security equal to at least the highest single month's duty liability over a rolling twelve-month window, per CBSA's CARM Phase 2 guidance) should not expect the bond to absorb strike-related storage costs. If you are already close to your bond ceiling and a strike parks three weeks of inbound containers at the terminal, the cash-flow pinch comes from double-paying: duties debited against the bond on release day, and storage invoices landing 30 days later.
We routinely see importers assume their duty and tax calculation includes all landed costs. It does not. CBSA collects duty, GST, and any SIMA margins. Everything else is between you and the supply chain.
What to do before the 72-hour window closes
Call your freight forwarder and confirm which inbound containers are scheduled for CPKC intermodal pickup in the next five to seven days. If any are time-sensitive or high-value, price out truck drayage now as a backup. Waiting until the strike starts means competing with every other importer scrambling for the same truck capacity.
If you operate a bonded warehouse or use a third-party logistics provider for cross-dock and inventory hold, ask whether they can accept early delivery by truck and stage the freight until your original distribution schedule resumes. That option only works if you can reroute before the container goes to the rail terminal.
For shipments already at the terminal and cleared under PARS, confirm with your broker that the cargo control number allows substitution of truck carrier without a new CAD. Most do, but the administrative step still takes a phone call and an email thread.
Strike notices are common, strikes are not
Railway unions issue 72-hour strike notices regularly as part of collective bargaining. Many expire without work stoppage because the parties reach agreement in the final hours. CPKC and the IBEW have been negotiating for months, and this notice does not guarantee a strike will actually occur.
That said, the 2024 work stoppages at Canada's two major railways (Canadian National and CPKC) lasted only a few days but created weeks of recovery backlog. Importers who ignored the notice and assumed normal service resumption paid for it in storage fees and missed delivery windows.
The prudent move is to treat the 72-hour notice as a planning trigger, not a false alarm. If the strike does not happen, you lose nothing. If it does, you already have alternate routing priced and queued.
If your next three shipments are riding CPKC intermodal and you want to walk through contingency freight routing and PARS refiling procedures, email us before the notice period runs out.
Frequently Asked Questions
Does a railway strike stop CBSA from releasing my goods?
No. CBSA processes the CAD and issues release regardless of carrier availability. Your goods clear customs, but they sit at the terminal accruing storage and per-diem until CPKC can move them. Per CBSA's CARM guidance, release prior to payment is independent of physical pickup.
What happens to my PARS release if the rail carrier goes on strike?
PARS (Pre-Arrival Review System) release is valid, but the container remains at the port or rail terminal until CPKC resumes service. You continue paying terminal storage, and if free-time expires (typically 4–5 days at major terminals), per-diem and demurrage charges start immediately.
Can I switch from rail to truck after CBSA has already released the shipment?
Yes, but the terminal and your freight forwarder must amend the cargo control number to reflect truck drayage instead of rail. If the original PARS entry named CPKC as carrier, some terminals require a fresh release confirmation or a broker letter before allowing truck pickup.
Does my RPP bond cover extra storage fees if the railway strike delays pickup?
No. Your RPP bond secures duties and taxes for release prior to payment under the CARM Client Portal. Terminal storage, demurrage, and rail per-diem are commercial charges between you and the carrier or terminal operator, not CBSA obligations.
How long does CPKC's 72-hour strike notice give me to reroute freight?
The union issued notice on the afternoon of the announcement, meaning strike action can legally begin 72 hours later. Importers with containers scheduled for CPKC intermodal pickup in that window should contact their freight forwarder immediately to explore truck drayage or hold the shipment at origin if possible.
Will a CPKC strike affect my CUSMA origin claim on the CAD?
No. CUSMA origin is a classification and duty-relief matter tied to the Commercial Accounting Declaration, not to the physical carrier. Your broker files the preference claim regardless of whether the container moves by CPKC rail, truck drayage, or sits in storage.
Originally published at https://www.canflow-global.com/en/insights/cpkc-strike-notice-and-what-it-means-for-cbsa-release-timelines/.
