Here come ADP private payrolls ...

At 8:15 a.m. ET, we'll get our first big look at how the labor market performed in August.

Expectations are for the report from ADP to show that private payrolls grew by 200,000, compared to 185,000 in July.

The print has averaged 198,000 this year, down from 248,000 in the second half of 2014, following a slowdown in mining and manufacturing, and the oil crash, according to HSBC.

This data comes ahead of the official jobs report from the Bureau of Labor Statistics on Friday. It's a huge one, given what it will say about how the US economy is performing and what this means for the prospects of an interest rate hike from the Federal Reserve this year.

Several experts have warned, however, that the ADP report is not to be used as a predictor of the official numbers.

We'll be back with the latest once the ADP data cross.