Massachusetts businesses got a break on the high-cost front Wednesday with news that workers’ compensation rates will drop an average of 10%.

Attorney General Andrea Campbell announced the settlement with the Workers’ Compensation Rating and Inspection Bureau and the State Rating Bureau, saying it will enable businesses to save about $130 million on workers’ comp insurance starting July 1.

“By lowering workers’ compensation insurance rates, we can help better protect workers and ensure that small businesses can offer higher wages, better benefits and lower prices,” Campbell said in a statement.

Campbell’s office said this year’s rate case started earlier than is required by statute because the AG “secured an order requiring that rates be reviewed sooner than the usual two-year cycle.”

British antitrust regulators have started investigating Amazon’s purchase of robot vacuum maker iRobot, adding further scrutiny to the $1.7 billion deal.

The Competition and Markets Authority said Thursday that it’s considering whether the deal will result in a “substantial lessening of competition” within the United Kingdom. In an initial step, the U.K. watchdog invited comments on the deal from “any interested party.”

The acquisition is already facing a review in the U.S. by the Federal Trade Commission amid worries about Amazon’s growing market power.

Bedford-based iRobot, which makes the popular Roomba robotic vacuum cleaners, said it “continues to work cooperatively with both the U.S. FTC and other regulatory agencies in their review of the Amazon-iRobot merger.”