A bill that would end prescribed wages on public construction projects in Indiana awaits the signature of Gov. Mike Pence. And Henry Burks, a union electrician who lives near Indianapolis, is bracing.

Mr. Burks, 57, is putting off plans to build a patio at his house. He is delaying painting and landscaping, too. And he said he is worried about how to continue helping his grown children with college costs if his income drops, as he firmly expects.

“This is going to inhibit me from taking care of my family,” Mr. Burks, who makes about $60,000 a year, said the other day as he took a break from installing conduit inside a corn processing plant in Lafayette. “Our wages will go down. The contractors we work for won’t get as many jobs. Maybe I’ll have to find work outside of Indiana.”

Indiana’s Republican-held legislature narrowly voted in April to repeal the state’s so-called common construction wage, a provision that had been around in various forms for 80 years and that sets pay standards for workers on publicly financed projects.