This chart is one of the reasons the headline numbers for January and February look the way they do.
The drop in employment in February included every category in the construction sector. Construction of buildings was down 4,600. Heavy construction was down 13,200. Specialty trade contractors (the people who work inside to finish structures) was down 13,500. In January all those numbers were positive.
So, do I think this February’s number means anything special? Not by itself.