The ILA strike on the East and Gulf Coast ports in early October lasted three days. By the time the tentative agreement was announced, most of the operational damage was front-loaded into the weeks before the strike — pulled-forward shipments, rerouting to the West Coast, expedited airfreight on the most time-sensitive Q4 goods — rather than the strike itself.

That's the headline. The longer story is what stuck after the immediate disruption ended. We've been talking through November with supply chain leaders at retailers ranging from national big-box chains to mid-sized specialty operators. The pattern that's emerging: the contingency moves made in September are now being treated as permanent or semi-permanent changes, not as one-time emergency response.

The pull-forward changed Q4 inventory shape

The most visible effect was the inventory shape going into Q4. Retailers that normally take Q4 holiday goods through East Coast ports in September and early October had largely moved those flows weeks earlier. A VP of supply chain at a national apparel retailer told us their company landed the bulk of holiday inventory by mid-September — roughly three to four weeks ahead of a normal year.

The cost of that pull-forward shows up in two places. First, in working capital: inventory sitting in DCs longer before it sells. Second, in storage cost: several operators told us they leaned on third-party warehousing in the Northeast and Midwest at higher rates than they would have planned, because their primary DCs were full earlier than expected.

The upside, of course, is that nothing went short for holiday. The operators we spoke to were unanimous that they'd take the working capital hit over the alternative.

West Coast routing decisions that didn't reverse

The other big September move was redirecting eastbound Asia flows from East Coast ports to Los Angeles and Long Beach, then transcontinental rail. The expectation, at least pre-strike, was that this was a temporary rerouting that would unwind once labor uncertainty cleared.

It hasn't fully unwound. Several operators told us they've kept somewhere between 20 and 40 percent of the rerouted volume on the West Coast lane, citing two reasons: rail capacity and transit time were more predictable than expected, and the broader uncertainty about a longer ILA contract extension — the early-October deal was tentative and pushed final agreement into January — made East Coast commitments harder to lock in for early 2025.

A director of international logistics at a home goods retailer summarized the thinking: "We don't know what January looks like. We do know what the West Coast looked like in October. We're not going to fully rebalance until we see a final contract."

Supplier conversations that got harder, then got formal

The piece of the post-strike landscape that's getting less press but more internal attention is what changed in retailer-supplier conversations. The strike accelerated discussions that had been happening informally for two years: nearshoring, supplier diversification, and contractual language around port disruption.

The conversations weren't new. What changed is that several large retailers have now formalized contingency requirements in their supplier scorecards. We've heard the same theme from sourcing leads at multiple retailers: suppliers that can demonstrate flexible routing — whether through their own logistics or through 3PL partnerships — are getting preferential treatment in 2025 line reviews.

A few specific moves we've confirmed:

• Larger retailers are increasing the share of goods sourced from or transhipped through Mexico, building on the nearshoring momentum that was already in motion before the strike.
• Several apparel and general merchandise importers have added or expanded direct relationships with Vietnam and India suppliers, partly to diversify country-of-origin and partly to access alternative port pairings.
• Contractual language around force majeure and port disruption has tightened. One sourcing lead at a regional grocery chain told us their 2025 contracts now include specific allocation rules for supplier-side delays attributable to U.S. port disruption.

What broke anyway

Two things broke despite the planning. The first was the cost line. Several operators told us their Q4 inbound logistics cost ran somewhere in the high-single-digit to low-double-digit percentage above plan, driven by the September pull-forward, the West Coast rerouting, and a meaningful share of expedited airfreight on time-critical SKUs.

The second was the long-tail SKU coverage. Operators were well-positioned on top sellers, but the lower-velocity assortment — the SKUs that don't justify expedited freight — came in light at several retailers we spoke to. The visible impact will be in early 2025 reporting, when out-of-stock rates on lower-tier SKUs show up in the assortment review.

The strike was short. The replanning was not. And the operators we spoke to are telling us this is the new baseline, not a one-time exception.