The majority of the Portland-based phone receptionist business's shares were bought by Updata Partners, of Washington, D.C.
Negotiations have lasted about seven months.
The study confirms what others have said about the prevalence of new jobs and the absence of increasing wages.
Twenty stores in Oregon will be affected, assuming the deal is approved by the Federal Trade Commission.
Growing economy to thank for city's second surplus in as many years, says the City Budget Office.