; (B) in section 2, by inserting or as otherwise provided in chapter 4 before the period at the end; (C) in section 208— (i) in the section heading, by striking Chapter 1; residual application and inserting Application ; and (ii) by adding at the end the following: This chapter applies to the extent that this chapter is not in conflict with chapter 4. ; and (D) in section 307— (i) in the section heading, by striking Chapter 1; residual application and inserting Application ; and (ii) by adding at the end the following: This chapter applies to the extent that this chapter is not in conflict with chapter 4. . (2) Table of sections (A) Chapter 2 The table of sections for chapter 2 of title 9, United States Code, is amended by striking the item relating to section 208 and inserting the following: 208. Application. . (B) Chapter 3 The table of sections for chapter 3 of title 9, United States Code, is amended by striking the item relating to section 307 and inserting the following: 307. Application. . (3) Table of chapters The table of chapters for title 9, United States Code, is amended by adding at the end the following: 4. Arbitration of employment disputes 401. . 5. Protection of concerted activity Section 8(a) of the National Labor Relations Act ( 29 U.S.C. 158(a) ) is amended— (1) in paragraph (5), by striking the period at the end and inserting ; and ; and (2) by adding at the end the following: (6) (A) to enter into or attempt to enforce any agreement, express or implied, whereby prior to a dispute to which the agreement applies, an employee undertakes or promises not to pursue, bring, join, litigate, or support any kind of joint, class, or collective legal action arising from or relating to the employment of such employee in any forum that, but for such agreement, is of competent jurisdiction