Gov. Jay Nixon's veto has been sustained on legislation calling for the creation of an online database of workers' compensation claims.
Senators supported the override 25-9 on Wednesday. But the House vote of 90-71 fell well short of the two-thirds majority required to override a veto.
Under the measure, businesses could provide a potential employee's name and Social Security number to identify the date of workers' compensation claims and whether the claim is open or closed.
Supporters say the bill would help businesses control workers' compensation costs. Nixon cited privacy concerns when he vetoed the legislation and called it "an affront to the privacy of our citizens."