Just What Constitutes Protected Concerted Activity in Social Media Use by Personnel?

An employee goes home at night, frustrated by what he or she perceives to be an unjust workplace and unfair manager, but can this employee go to social media to complain? Employers sometimes mistakenly accuse personnel of making inappropriate or harmful comments about the employer on social media. However, the federal National Labor Relations Act protects employees in the private sector who want to raise legally significant issues about their workplace, unionized or not. Those issues might constitute protected concerted activity under the federal statute.