The Web 2.0 communicative revolution is impacting many fields of law, including labor and employment law. This article focuses upon the application and impact of statutory and constitutional doctrines on the use of social media in public employment in the United States. As part of that analysis, it will compare and contrast developments under the National Labor Relations Act, state collective bargaining and tenure laws and the First Amendment concerning social media. Through this comparative analysis, the article will highlight the distinctions and similarities of public sector labor law and their implications for the future.