May ISM Services PMI releases Wednesday at 10:00 ET, and the line under the headline that matters this week is employment. The April employment sub-index printed at 49.0, the first sub-50 reading since November 2024 and the configuration that historically leads private services payrolls by one to two months. With ADP at 8:15 ET the same morning and NFP Friday, ISM Services employment is the cleanest sector-level prior on whether the labor cooling is moving from goods into the part of the economy that prints 85% of total hours worked.
The headline consensus sits at 51.4 for May, after April’s 51.6. That keeps services in expansion but at the slowest pace since early 2025. The narrow expansion masks a widening internal split. Sixteen of the eighteen tracked industries reported growth in April. Two reported contraction: real estate and accommodation. A May print holding above 51 with the same internal pattern is a soft economy with a hard ceiling on rate-sensitive sectors, not a turn.
Prices paid is the second print to watch. April registered 65.1, the highest services prices-paid since early 2023 and only narrowly below the 65.7 manufacturing prices-paid reading the same month. The tariff pass-through into services inputs (logistics, packaging, equipment, professional services billing rate increases) has been the late-cycle surprise of 2026. A May reading holding above 64 keeps services-side disinflation off the table through the June FOMC meeting. A drop below 60 would be the first material softening since the tariff cycle began and the data point sell-side notes have been waiting for to mark down second-half core PCE forecasts.
New orders ran 52.3 in April, the eighth consecutive expansion print but the weakest of the run. Order backlog at 48.4 turned contractionary for the first time since early 2024. The two lines together describe a services sector still booking work but no longer building a queue. That is the pattern that precedes the employment line moving from 49 to 47 in roughly half of past cycles, and to 51 in the other half. The May print resolves which side of that split this cycle is on.
The release lands forty-five minutes after May ADP private payrolls. A weak ADP plus a sub-49 ISM Services employment print would mark the first joint services-side labor read pointing at a sub-100K NFP Friday. Fed funds futures opened Wednesday pricing 1.4 cuts through year-end. Both data points printing weak together would push that count toward 1.7 before Friday opens. Both printing in line leaves the September cut probability sitting where it has been since the April PCE release: in the 55% to 60% range, with the Friday print as the actual mover.