Working-class voters helped Republicans make steady election gains this year and expanded a coalition that increasingly includes rank-and-file union members.

Despite some union leaders welcoming the nomination of Republican Rep. Lori Chavez-DeRemer to lead the Labor Department, there is still trepidation as to what lies ahead for the rules, regulations and enforcement strategy for American workers.

Donald Trump’s choice for Secretary of Labor is the latest sign that his second term may be trickier for businesses to predict than his first. Trump picked Congresswoman Lori Chavez-DeRemer, a Republican from Oregon,