 ATLANTA, Jan. 28, 2021 GLOBE NEWSWIRE -- Williams Industrial Services Group Inc. OTCQX: WLMS, a construction and maintenance services company, will release financial results for fourth quarter ended December 31, 2020 before financial markets open on March 31, 2021. Management will host a conference call and webcast later that morning to discuss these results; a question-and-answer session will follow. 