Only May and June of 2001 showed a higher job count than the 1,164,000 raw number just out. So the middle of construction season then when I think there were a few big construction projects pushing up the numbers (and before USAirways employment imploded of course). Seasonally adjusted the first part of 2001 had some slightly higher numbers.
So we will call it the post-USAirways peak.
and yes.. just a side story to that number may be the warm weather permitting more construction than is typical to continue through the season.