HOUSTON, Oct. 31, 2017 (GLOBE NEWSWIRE) — Willbros Group, Inc. (NYSE:WG) announced today plans to release its third quarter financial results on Wednesday, November 8, 2017 after the close of market. In conjunction with this release, the company will host a conference call, which will be broadcast live over the internet, on Thursday, November 9, 2017 at 10 a.m. Eastern Time (9 a.m. Central Time).