This is Part III of a four-part series on Social Media Law. For Part I, click here. For Part II, click here. Last week, in Part II, I discussed the National Labor Relations Board’s review of corporate social media policies. The NLRB has held most such policies to be unlawful under U.S. labor law. This week I’ll take a look at one relevant case and get into a few helpful tips for employers and employees to keep in mind.