"The people win again. Unanimously," attorney Jim Barton said in an email as the court's order came down in the closing minutes of the business day.
He represented the committee that brought Proposition 206 to the ballot in November. The state Attorney General's Office also defended the law.
Attorney General Mark Brnovich praised the ruling in a statement issued by his office.
“As Attorney General, my job is to uphold the rule of law," he said. "The constitution is designed to protect our rights. It's not a tool to be used to undermine the will of the people."
Chief Justice Scott Bales issued the order, stating the seven-member court unanimously rejected the arguments from business groups that the law is unconstitutional. A detailed explanation of the court's reasoning will come later, Bales wrote.
The Arizona Chamber of Commerce and Industry led the challenge, asking the court to overturn the law, which will raise Arizona's minimum wage to $12 an hour by 2020. It also requires employers to offer mandatory paid sick leave as of July 1.
