The Donald W. Reynolds National Center for Business Journalism announced this morning that ProPublica reporter Michael Grabell has won the gold prize in the 2014 Barlett & Steele Awards for Investigative Business Journalism.

Grabell’s investigative series, “Temp Land,” combined deep on-the-ground reporting and groundbreaking data analysis to show that temporary workers – the backbone of a fast-growing segment of the economy – are hired for the most dangerous jobs, and are hurt at as much as six times the rate of regular employees.

In the wake of Grabell’s reporting, California Gov. Jerry Brown signed a bill into law late last month holding employers legally responsible if their temp agencies and subcontractors put workers at risk or withhold wages.

Congratulations to all of this year’s Barlett & Steele winners.