QUESTION 
               You asked whether a payment pursuant to a “sidebar” agreement between a Title II beneficiary
                  and her former employer should be subject to offset under the Social Security Act.
               
                ANSWER  
               The payment made pursuant to a “sidebar” agreement between a Title II beneficiary
                  and her former employer should be subject to offset under the Social Security Act..
               
               SUMMARY OF EVIDENCE
               Ms. A was awarded disability insurance benefits in April 2009, beginning in January
                  2005. Ms. A had a workers’ compensation claim for an injury that occurred in February
                  1995, against her employer (Employer), which was self-insured. “Insurer” is Employer’s
                  workers’ compensation insurer.
               
               Ms. A’s worker’s compensation claim was closed on February 6, 2009, by order of the
                  Washington State Department of Labor and Industries. Pursuant to that order, Ms. A
                  was awarded permanent partial disability in the amount of $9,000. In addition to the
                  permanent partial disability award, Ms. A also received two lump sum payments. The
                  first payment, in the amount of $20,000, was received on April 14, 2008. The second
                  payment, also in the amount of $20,000, was received on February 24, 2009.
               
               The February 24th payment was made pursuant to a “sidebar” agreement between Ms. A
                  and Employer/Insurer. The terms of the agreement were as follows: (1) the parties
                  would jointly request that the State Department of Labor and Industries issue a closure
                  order incorporating the terms of a previous closure order as to time loss and permanent
                  partial disability; (2) Ms. A’s workers’ compensation claim would be closed without
                  further award of time loss, loss of earning power, permanent partial disability, or
                  pension; (3) Ms. A would make no further claim for time loss or loss of earning power;
                  (4) Ms. A was not eligible for vocational assistance; (5) various medical impairments
                  would be segregated from Ms. A’s workers’ compensation claim; (6) if Ms. A’s workers’
                  compensation claim is ever reopened for benefits, Employer/Insurer is entitled to
                  offset any amounts paid under the agreement; and (7) Employer/Insurer would pay Ms.
                  A $20,000 within 20 days after their receipt of the closure order.
               
               ANALSIS
               Section 224 of the Social Security Act, 42 U.S.C. § 424a, limits the combined amount
                  of an individual’s federal Social Security disability insurance benefits and a state
                  workers’ compensation benefits. Pursuant to the Act, an individual receiving both
                  Social Security disability benefits and state workers’ compensation benefits on account
                  of a disability “shall” have his or her federal benefits reduced by the amount necessary
                  to ensure that the sum of the combined benefits does not exceed eighty percent of
                  the individual’s pre-disability earnings. 42 U.S.C. § 424a(a); 20 C.F.R. § 404.408.
                  This statutory provision is commonly known as the workers’ compensation offset provision.
               
               However, not all workers’ compensation benefits are subject to offset. Rather, only
                  “periodic benefits” arising under a state workers’ compensation program based upon
                  the individual’s “total or partial disability (whether or not permanent)” are subject
                  to offset. 42 U.S.C. § 424a(a)(2). A lump sum settlement qualifies as a periodic benefit
                  when it is a “substitute” for a “periodic benefit.” 42 U.S.C. § 424a(b).
               
               We have found no Washington state court interpretations of whether payments pursuant
                  to a “sidebar” agreement are considered payments pursuant to the Washington state
                  workers’ compensation laws. The Washington Board of Industrial Appeals refused to
                  enforce terms of a “sidebar” agreement, finding that it was a private agreement and
                  was not a benefit within the meaning of the Washington Industrial Insurance Act. In
                  re Alta D.  Paterson, http://biia.wa.gov/significantdecisions/0515987.htm. The Board reasoned that workers’ compensation benefits were enumerated in the statute
                  and that payments under a “sidebar” agreement were not one of those enumerated benefits.
                  Because their enforcement powers were limited to those enumerated benefits, they could
                  not enforce the terms of a “sidebar” agreement.
               
               However, the determination of whether the workers’ compensation offset provision under
                  the Social Security Act applies is an issue of federal law, not state law. Campbell v. Shalala, 14 F.3d 424, 427 (8th Cir. 1994); Krysztoforski v. Sec. of  Health & Human Servs., 55 F.3d 857, 859 (3d Cir. 1994). Thus, while some deference may be paid to the Board’s
                  interpretation of Washington workers’ compensation laws, the ultimate determination
                  of whether a workers’ compensation offset is appropriate under the Social Security
                  Act is governed by federal law. Krysztoforski, 55 F.3d at 859. Accordingly, while the Washington Board of Industrial Appeals analysis
                  is instructive, it does not control the agency’s decision whether to apply the workers’
                  compensation offset provision in his matter.
               
               Courts have upheld the application of the workers’ compensation offset provision to
                  funds received as part of a settlement agreement in a workers’ compensation claim.
                  In Black v. Schweiker, 670 F.2d 108, 109, (9th Cir. 1982), the employer agreed to pay the employee $20,000
                  to settle a workers’ compensation claim, despite the fact that it disputed any liability
                  for the employee’s injury.  Id. at 109. In upholding SSA’s application of the workers’ compensation offset provision
                  to the $20,000, the court rejected the employee’s argument that under Oregon law,
                  because the employer disputed that it had any liability for his injury, a workers’
                  compensation claim had not been established. “Where the right to and liability for
                  periodic workers’ compensation benefits are thus extinguished by a voluntary settlement
                  agreement, the settlement can only be regarded as a ‘substitute’ for the payments”
                  under the Social Security Act. Id. at 110 (citations omitted).
               
               Similarly, in Munsinger v. Schweiker, 709 F.2d 1212, 1217 (8th Cir. 1983), the court upheld the application of the workers’
                  compensation offset provision to a settlement of a workers’ compensation claim, despite
                  the fact that under state law, “the settlement of a disputed worker’s compensation
                  claim is not construed as a payment of weekly compensation.” The court noted that
                  the workers’ compensation laws were the only remedy the employee had against her employer
                  for her injury and that the settlement absolved the employer of liability. Id. The court found that to “deny the Secretary an offset of the settlement would frustrate
                  congressional intent” of barring receipt of duplicative benefits.  Id.
               In this matter, we believe that application of the workers’ compensation offset provision
                  is appropriate. By entering into the “sidebar” agreement, Ms. A and Employer/Insurer
                  agreed to “fully and completely resolve all pending issues relating to [Ms. A’s] workers’
                  compensation claim.” “Sidebar” Agreement at 1. In the event that Ms. A’s workers’
                  compensation claim is ever reopened, payments made pursuant to the “sidebar” agreement
                  will be offset against any future award of benefits. “Sidebar” Agreement at 2, ¶5.
                  Thus, the basis for the “sidebar” agreement between the parties is Ms. A’s workers’
                  compensation claim, which has been resolved by the terms of the “sidebar” agreement.
               
               Because Ms. A’s workers’ compensation claim was settled in exchange for the receipt
                  of $20,000, that sum can properly be regarded as a “substitute” for periodic payments
                  under the Social Security Act. Medical, legal, or related expenses in connection with
                  the workers’ compensation claim are not considered to be part of a periodic payment.
                  20 C.F.R. § 404.408(d). However, Ms. A has the burden of establishing what part, if
                  any, of the $20,000 is not a substitute for periodic payments under the workers’ compensation
                  offset provision. Black, 670 F.2d at 110. Accordingly, unless Ms. A provides evidence that the $20,000 was
                  payment for medical, legal, or other related expenses in connection with her workers’
                  compensation claim, the $20,000 should be offset against her Social Security benefits.
               
               CONCLUSION
               The $20,000 paid to Ms. A pursuant to the “sidebar” agreement between her and her
                  former employer is subject to the worker’s compensation offset provision of the Social
                  Security Act.