An industry-funded business group sharply criticized the National Labor Relations Board under President Barack Obama in a report released Tuesday that claims the board has “upended 4,559 total years of established law” in favoring labor interests.

The Coalition for a Democratic Workplace,a group formed in 2005 representing 600 businesses and associations that has opposed some key NLRB actions, co-authored the report titled, “Was the Obama NLRB the Most Partisan Board in History?” with its management-side labor and employment attorneys at Littler Mendelson’s Workplace Policy Institute. The report examines significant decisions the board made while constituted by a majority of Obama appointees through Aug. 28, 2016. Signaling their intentions, the group said they released the report hoping to provide “a useful resource for the incoming administration of President-elect Donald Trump and the 115th Congress.”