NOS4-1 (WLMSQ) 10-Q 2021 Q2 Quarterly report

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, Randall R. Lay, the Senior Vice President and Chief Financial Officer of Williams Industrial Services Group Inc. (the “Company”), hereby certify, that, to my knowledge:

1.      The Quarterly Report on Form 10-Q for the period ended June 30, 2021 (the “Report”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.      The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 18, 2021	By:	/s/ Randall R. Lay
		Randall R. Lay
		Senior Vice President and Chief Financial Officer

A signed original of this written statement has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.