Employer burden to justify ban on employees discussing ongoing investigation

In Banner Health Systems, 28 CA 023438, 348 NLRB No. 93, [Download here] the NLRB continues its aggressive expansion of protection for employee concerted discussions of workplace issues. In Banner, the employer had a blanket prohibition against discussion of its investigation of workers complaints. The Board rejected this approach as overbroad and required an individualized showing by the employer of its business justification for interfering with Section 7 rights. Money quote:

it was the Respondent’s burden “to first determine whether in any give[n] investigation witnesses need[ed] protection, evidence [was] in danger of being destroyed, testimony [was] in danger of being fabricated,or there [was] a need to prevent a cover up.” Id. The Respondent’s blanket approach clearly failed to meet those requirements.

This result is unremarkable given the text of Section 7, yet the practical effect upon, and burden on employers during an ongoing investigation are potentially huge.