Prior was -0.1% (revised to -0.3%)Unit labour costs +1.4% q/q, fourth consecutive gain (+3.2% y/y)Goods led the decline (-1.7%); ag/forestry cratered -8.6%, construction -2.3%Statistics Canada says business sector labour productivity fell 0.5% in Q1, the second straight quarterly drop after -0.3% in Q4. The Q4 number was revised down from -0.1% in today's report. We already know that real GDP slipped 0.1% on the quarter. Hours worked rose 0.4%. So Canadian businesses put more hours in and got less out. That's the whole productivity miss in one sentence — you're running harder to stand still.The piece that actually matters for the Bank of Canada is buried at the bottom: unit labour costs jumped 1.4% q/q, the fourth consecutive quarterly increase, and they're now up 3.2% from a year ago. Productivity falling while hourly compensation rises 0.9% is the textbook recipe for ULC pressure, and it doesn't sit comfortably next to a central bank that's likely going to have to raise rates later this year.Under the hood, goods-producing led the decline at -1.7%, with agriculture, forestry, fishing and hunting cratering 8.6% as hours blew out 5.6% against a 3.5% output drop. Construction was the other weak spot at -2.3%. Services held up better, edging up 0.3% — retail trade (+1.5%) and transportation and warehousing (+1.6%) did the heavy lifting on the positive side.The market reaction on this report is almost always nil. This is backward-looking Q1 data, already revised to incorporate the May 29 GDP figures, and it's not on anyone's trading screen. But it reinforces the structural picture: Canada's productivity problem hasn't gone away, ULC is accelerating into a slowing economy, and the BoC's path is getting more complicated, not less. This article was written by Adam Button at investinglive.com.