When and how did the Board start to require this Notice posting?
The posting of NLRA rights was proposed by the Board in a federal rulemaking procedure in December 2010. The proposal was posted in the Federal Register and public comments were accepted for a 60-day period. The Board received nearly 7,000 comments. A detailed description of the comments and the Board’s response to them, including modifications to the rule, is available here. The final rule was posted in the Federal Register on August 30, and was set to take effect 75 days later, on November 14, 2011. The effective date was later changed to April 30, 2012. Click here for the text of the final rule.