Sahm rule triggers: NFP 114k miss, unemployment jumps to 4.3%

The July 2024 jobs report released August 2 delivered a sharp downside surprise: 114k payrolls vs 175k expected, with May-June revisions subtracting another 29k. More importantly, unemployment rose to 4.3% from 4.1%, bringing the 3-month average up 0.5 percentage points from its cycle trough. This triggered the Sahm Rule, a recession indicator that had correctly flagged every US recession since 1960. The Hurricane Beryl landfall distorted household survey collection but not enough to account for the rise.

Markets panicked. The S&P 500 fell 1.84%, the Nasdaq 100 2.46%, and the Russell 2000 3.52% (small caps had run hard on rate-cut expectations in July). Bond yields crashed: 2Y fell 27 bps, 10Y fell 19 bps. The yield curve bull-steepened sharply. Japan's Nikkei would drop 12.4% the following Monday as the yen carry trade unwound violently, amplifying the US selloff.

The session marked the inflection point where the Fed shifted from "inflation vigilance" to "labor market protection." The cumulative Sahm trigger, Nikkei crash, and VIX spike to 65 on August 5 forced the Fed's hand: Powell pre-committed to a September cut at Jackson Hole August 23, delivering a 50 bp cut September 18. The August 2 NFP remains one of the most important single data releases of the 2020s for shifting the policy regime.