An Ohio company called Convergys will close a large call center in Wilsonville and lay off all 208 workers there by the end of March, according to a letter the company sent to state officials this week.

Convergys didn't explain the closure or respond immediately to an inquiry seeking details. It said some employees will have "limited opportunities" to work from home after the closure.

Oregon's unemployment rate remains near an all-time low, at 4.2 percent in November. But the state has endured a number of high-profile layoffs and closures at prominent employers. In Wilsonville, for example, Microsoft closed a factory last year that employed 100 making a large-format computer.

Call center employment is especially volatile, with workers cycling in and out of jobs and facilities opening and closing regularly.

Convergys reported revenue of $2.1 billion through the first nine months of last year, down slightly from 2016. It posted profits of $112.5 million through September, down $13 million from the prior year.

-- Mike Rogoway; twitter: @rogoway; 503-294-7699