He has been a news correspondent for ABC Radio Networks since 1982.
In March 2009, he was chosen as a possible successor to Paul Harvey on the radio show The Rest of the Story, but the show was cancelled after three weeks with Limerick as the host.
After the cancellation, Mike Huckabee's program, "The Huckabee Report" took over the time slot where Harvey's "The Rest of the Story" ran.