Which of the Following Employee Involvement Mechanisms Is Likely to Be

Which of the following employee involvement mechanisms is likely to be considered illegal under Section 8(a) (2) of the NLRA?

A) Ones in which employees provide ideas to management or where information-sharing sessions are held to share information with employees.
B) Plans in which employees have final decision-making authority, like self-directed work teams or grievance committees.
C) Plans in which employees are appointed by management to speak on behalf of all other employees in matters affecting them.
D) Plans that are primarily concerned with issues of quality and productivity.