For employers that are laying off employees, you can visit unemployment.ohio.gov and click on coronavirus and unemployment from the main page. From there, there is a FAQ to help employees and employers get through the process.
Unfortunately, you will more than likely not get through on the phone due to the overload, but you can try. You may also experience slowness with the website due to high traffic. Please try to be patient with it.
For employers, if you have not yet laid off employees but are planning to you can use the Mass Layoff Instruction Sheet found on the website: http://www.odjfs.state.oh.us/forms/num/JFS00671/pdf/
For employees, please remind them to check their messages and to file weekly claims.