1. Short title This Act may be cited as the Workflex in the 21st Century Act . 2. Qualified flexible workplace arrangement plan treated as welfare plan Section 3(1) of the Employee Retirement Income Security Act of 1974 ( 29 U.S.C. 1002(1) ) is amended— (1) by striking or (B) and inserting (B) ; and (2) by inserting before the period at the end the following: , or (C) any qualified flexible workplace arrangement plan described in part 8 of subtitle B . 3. Relationship to other laws Section 514 of the Employee Retirement Income Security Act of 1974 ( 29 U.S.C. 1144 ) is amended by adding at the end the following: (f) (1) Subsection (a) shall apply with respect to any and all State laws insofar as they may now or hereafter relate to any qualified flexible workplace arrangement plan described in part 8, except that in the case of workflex options offered under such a plan— (A) except as provided in subparagraph (B), if only certain employees are eligible to enroll in a particular workflex option under the plan, such subsection shall apply with respect to any and all State laws insofar as they may now or hereafter relate to the particular workflex option solely with respect to those employees who are so eligible