PORTLAND — The regional government that oversees three counties in the Portland metropolitan area has voted to refer a ballot measure to voters this May that would raise $250 million a year to address chronic homelessness in the region.

The government entity, Metro, voted unanimously on Tuesday to refer two taxes to voters in Multnomah, Clackamas and Washington counties, Oregon Public Broadcasting reported Wednesday. The money would be earmarked for supportive services that target the reasons people can become homeless. Those services would include case management, rent assistance, addiction and recovery services, mental health care, and employment support.

“Failure on this is not an option,” Metro Council President Lynn Peterson said. “We’ve waited too long, and it is now time to pay for the services that have proven to be effective in addressing the cause of chronic homelessness.”

Metro will ask voters to approve two new taxes May 19.

The first would be a 1 percent marginal income tax for the wealthiest residents — individuals earning more than $125,000 annually or couples making more than $200,000. That tax would generate $169 million a year, according to Andy Shaw, director of government affairs for Metro.

The second tax would be a 1 percent business tax on the profits of mid- and large-sized businesses, those with gross receipts of more than $5 million dollars.