At 12:01 AM on October 1, the master contract between the International Longshoremen's Association and the United States Maritime Alliance expires. If the two sides do not agree to a new contract or an extension, 45,000 longshore workers at 36 US East Coast and Gulf Coast ports will walk off the job. That would shut down ports handling roughly 50% of all US containerized imports, including New York-New Jersey, Norfolk, Charleston, Savannah, Houston, and New Orleans.
For Canadian retail, manufacturing and freight networks that interact with US East Coast and Gulf ports, the next six days are about contingency. Here is what could close, what would stay open, and what carriers and shippers should be doing now.
The Contract Clock: October 1 Is the Deadline
The ILA-USMX master contract has been in force since 2018 and was extended once. The current dispute centres on two issues: wage levels relative to the West Coast ILWU contract settled in 2023, and the deployment of automated terminals. The Wall Street Journal's coverage noted that ILA leadership has explicitly committed to a strike if no deal is reached by October 1, with no extension on offer.
The Biden administration has signalled it will not invoke Taft-Hartley to force workers back. Reuters reported Acting Labor Secretary Julie Su's confirmation that the administration's role is to facilitate negotiations, not impose them.
What Closes If the ILA Walks
A strike would close 36 ports from Maine to Texas, including the largest US East Coast container terminals. The Journal of Commerce's analysis estimates these ports collectively handle approximately 50% of all US containerized trade, including a disproportionate share of pharmaceuticals, automotive parts, perishable food, and electronics.
"A one-day ILA strike costs roughly $5 billion in stranded freight. A week-long strike could cost $25-50 billion and take months to clear from the network. Nobody wins this." - JP Morgan supply chain analysis, September 2024
Trucks and intermodal trains continue to operate through a port strike, but with no containers being unloaded or loaded at the affected docks. Drayage carriers operating out of those ports lose their work overnight. Trucking demand redistributes toward LA-Long Beach, Oakland, Vancouver, Prince Rupert, and Halifax, but the inland network has limits on how much rerouted volume it can absorb.
The Cascade Into Canadian Freight
Canadian freight feels an ILA strike through three channels.
Volume diversion to Canadian ports: Vancouver, Prince Rupert, Halifax and Montreal are the natural alternatives. Halifax in particular is positioned to absorb East Coast diversion volume, but the port's intermodal rail capacity will be tested. Canadian National and CPKC will be running at maximum capacity within days.
Inland trucking compression: containers landing at Halifax for US-bound destinations need drayage and inland trucking that did not exist last week. Canadian carriers running US-bound from Halifax should expect strong demand and elevated rates.
Shipper inventory disruption: Canadian retailers and manufacturers receiving US-routed inventory through East Coast ports will face delays. The Retail Council of Canada has been advising members to identify ILA-port-dependent SKUs and pre-position holiday inventory before the strike date.
What Shippers Are Already Doing
Through September, shippers have been doing exactly what shippers always do before a known disruption: front-loading inventory. Bloomberg reported that US imports through August reached the highest level since the pandemic peak, driven almost entirely by ILA strike preparation.
The downside of front-loading is that it pulls forward demand from October-November into August-September. After the strike resolves, freight networks face a demand cliff in late Q4 as shippers work through pre-positioned inventory. Carriers should plan for both phases.
A Pre-Strike Playbook
Identify ILA-Port-Dependent SKUs
Pull a list of products routed through New York-New Jersey, Norfolk, Savannah, Charleston or Houston. Confirm with your customs broker which containers are scheduled to arrive in the strike window.
Pre-Stage Inventory Before October 1
If containers are scheduled to discharge before September 30, accelerate clearance and drayage. After October 1, those containers may sit on vessels for weeks.
Re-Route Critical Volume to Canadian Ports
Halifax, Montreal, Vancouver and Prince Rupert will absorb diverted volume. Talk to ocean carriers about re-routing critical-path SKUs through Canadian ports for the duration of the strike.
Lock In Inland Drayage From Halifax and Montreal
If you re-route through Eastern Canadian ports, the bottleneck becomes inland trucking to your DC. Lock in drayage and FTL contracts now, before the strike makes capacity scarce.
Communicate Down-Network Delays
Retailers, manufacturers and 3PLs need to know what is at risk. Build the conversation with receivers now so that strike-driven delays don't become customer service crises in November.
Keylink runs Canada-USA full truckload capacity that scales when port volume reroutes. Halifax, Montreal, GTA, Vancouver - we cover it.
Talk to Our Team →The Bottom Line
The ILA strike threat is real and the deadline is real. Carriers, shippers and freight network operators across North America are operating on the assumption that a strike happens October 1, and planning the recovery from there. A short strike (3-5 days) creates a manageable backlog. A long strike (2-3 weeks) creates a freight crisis that bleeds into Canadian retail through Q4.
At Keylink, we are watching the negotiations daily and pre-positioning capacity for the volume that will reroute through Eastern and Western Canadian ports. The freight has to keep moving. We will be ready when it does.
