Mental health parity compliance is the employee benefits compliance issue most likely to generate enforcement action against a mid-sized employer in the fourth quarter of 2026 and most employers are not prepared for it. The Mental Health Parity and Addiction Equity Act requires that the limitations placed on mental health and substance use disorder benefits be no more restrictive than those placed on medical and surgical benefits. The 2026 plan year brings full documentation requirements into force, and the Department of Labor has elevated scrutiny of employer compliance as a specific enforcement priority.
The enforcement mechanism that makes this particularly urgent is the DOL’s authority to request a plan’s comparative analysis at any time, without advance notice and without a specific complaint triggering the request. An employer that cannot produce a compliant comparative analysis within 45 days of a DOL request is subject to enforcement action. According to compliance guidance published in 2026, the majority of employer-sponsored plans that have been reviewed by the DOL have required remediation. Here are five things every employer must know and act on before December 31.
1. Understand What the Comparative Analysis Actually Requires
The non-quantitative treatment limitation (NQTL) comparative analysis is a detailed, written document that compares the factors, evidentiary standards, and processes used to determine mental health and substance use disorder benefit limitations against those used for medical and surgical benefits. It is not a summary. It is not a checkbox. It requires a specific, reasoned explanation of each NQTL applied to mental health benefits, the comparable limitation applied to medical/surgical benefits, and the basis for concluding that the limitations are equivalent.
NQTLs include prior authorization requirements, step therapy protocols, network admission standards, reimbursement rate methodologies, and fail-first requirements. Each of these must be evaluated and documented on both the mental health and medical/surgical side of the plan. The analysis must be plan-specific. A generic template from a carrier or TPA does not satisfy the requirement unless it is customized to the specific plan’s design and the specific limitations in place.
2. Know Who Is Responsible for Producing It
For fully insured plans, the insurance carrier is required to conduct and provide the comparative analysis to the plan sponsor upon request. The employer’s obligation is to request it from the carrier, review it for completeness, and retain it. “My carrier handles compliance” is not a valid response to a DOL request. The plan sponsor remains responsible for ensuring that a compliant analysis exists and can be produced.
For self-funded plans, the employer or the third-party administrator is responsible for producing the analysis. TPAs vary significantly in the quality and completeness of the comparative analysis documentation they provide. An employer whose TPA has provided a generic template rather than a plan-specific analysis may believe they are compliant when they are not. Reviewing the analysis with qualified ERISA counsel before a DOL request arrives is the only way to know whether the documentation would survive scrutiny.
3. Understand What Non-Compliance Actually Costs
An employer that receives a DOL request for a comparative analysis and cannot produce one within 45 days must notify plan participants that the plan is not in compliance with MHPAEA. This is more than a theoretical consequence. It can create reputational risk, potential litigation from plan participants who were denied mental health benefits that would have been available under a compliant plan, and continued DOL enforcement activity until compliance is achieved.
Litigation risk from plan participants is a less-publicized but potentially more financially significant consequence of MHPAEA non-compliance. Employees who were denied mental health benefits, or who were required to pay higher out-of-pocket costs than they would have for comparable medical benefits, may have a private right of action under ERISA. Courts have permitted retrospective benefit claims in some cases, meaning non-compliance identified in 2026 could result in liability for benefits that were improperly denied in prior plan years.
4. Complete These Three Actions Before Year End
Request the comparative analyses in writing. Ask your carrier or third-party administrator (TPA) for the plan’s documented analyses of its nonquantitative treatment limitations, such as prior authorization and provider network standards. Keep the request, the response and any follow-up questions. If the materials do not address your plan’s practices, identify what is missing and ask how it will be supplied. Federal law continues to require these analyses even though the Departments have paused enforcement of the new provisions in the 2024 MHPAEA final rule. U.S. Department of Labor
Have qualified ERISA counsel review the materials. Counsel can assess whether the analyses address the plan’s actual limitations, identify missing information and advise on the requirements that currently apply. This is particularly useful while the Departments reconsider the 2024 final rule. U.S. Department of Labor
Examine access to mental health providers. Ask for evidence about the plan’s network standards and members’ ability to obtain care, including whether listed providers accept new patients and how long members wait for appointments. Compare relevant mental health and substance use disorder access measures with medical and surgical access, and have counsel advise how the findings should be addressed in the applicable comparative analyses. The DOL’s MHPAEA self-compliance tool provides a starting point for this review. dol.gov
5. Prepare for the 2027 Plan Year Now
MHPAEA compliance is an ongoing responsibility. Use the fourth quarter of 2026 to obtain the analyses, resolve missing information and set a process for reviewing plan changes and network practices in 2027. The Departments’ current enforcement statement makes an important distinction: the pause applies to new provisions of the 2024 final rule, while MHPAEA’s statutory obligations, including the comparative analysis requirement, remain in effect. U.S. Department of Labor
Tooher-Ferraris can help employers organize a benefits compliance review and coordinate with the appropriate advisers. Explore our HR compliance and legal support and employee benefits strategy and consulting services.
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Frequently Asked Questions
What is an NQTL comparative analysis and who is required to have one?
A non-quantitative treatment limitation comparative analysis is a written document required under MHPAEA that compares the limitations placed on mental health and substance use disorder benefits against comparable limitations on medical and surgical benefits. All employer-sponsored group health plans that offer both medical and mental health benefits are required to have a current, plan-specific comparative analysis available for DOL review.
How quickly must an employer respond to a DOL request for an MHPAEA comparative analysis?
Employers have 45 business days to respond to a DOL request with a compliant comparative analysis. If the plan cannot produce one within that period, the employer must notify plan participants of the non-compliance. The DOL may then require corrective action and continue enforcement until a compliant analysis is in place.
What happens if our plan is found non-compliant with MHPAEA?
Consequences include mandatory participant notification, DOL-required corrective action, potential plan disqualification, and private litigation from plan participants who were denied benefits under non-compliant plan terms. Courts have allowed retrospective benefit claims, creating liability for prior-year benefit denials that resulted from non-compliant NQTL applications.
