(a) Insert the clause at 52.222-40, Notification of Employee Rights under the National Labor Relations Act, in all solicitations and contracts, including acquisitions for commercial items and commercially available off-the-shelf items, except acquisitions-

           (1) Under the simplified acquisition threshold. For indefinite-quantity contracts, include the clause only if the value of orders in any calendar year of the contract is expected to exceed the simplified acquisition threshold;

           (2) For work performed exclusively outside the United States; or

           (3) Covered (in their entirety) by an exemption granted by the Secretary.

      (b) A contracting agency may modify the clause at 52.222-40, if necessary, to reflect an exemption granted by the Secretary (see 22.1603(b)).