Comparing ACT, Recuperation, and ACT Plus Vocational Support for Clinical Burnout

Clinical burnout (also referred to as stress-related exhaustion) is a common reason for long-term sick leave in Sweden. Although many patients receive psychological or rehabilitative support, there is currently no established evidence-based treatment for clinical burnout, and the theoretical models guiding clinical care vary widely. Two dominant approaches in current practice are (1) recuperation-focused interventions emphasizing rest, balance, and lifestyle change, and (2) cognitive-behavioral approaches that aim to modify patterns of behavior and internal experience. Return-to-work (RTW) support is also widely regarded as important, yet structured, scalable, and well-defined RTW models tailored for burnout remain scarce.

This randomized controlled trial evaluates three 10-week online treatments for adults with clinical burnout:

1. Online Acceptance and Commitment Therapy (ACT) ACT is a contextual behavioral approach that aims to increase psychological flexibility-defined as the capacity to act in accordance with one's values while remaining open to difficult internal experiences. The intervention uses value clarification, behavior change strategies, mindfulness exercises, and structured exposure to behaviors that maintain exhaustion (e.g., avoidance, perfectionism, rigid rules around rest and activity). The program frames burnout as a crisis of engagement driven by excessive "musts" and "shoulds," helping participants reconnect with personally meaningful activities.
2. Online Recuperation-Focused Treatment This comparator is an active, credible intervention resembling what many patients receive in Swedish primary care. It focuses on rest, variation, energy monitoring, sleep hygiene, pacing, relaxation exercises, and general stress management. The treatment is primarily supportive and non-directive, emphasizing recuperation rather than behavioral exposure or value-guided change.
3. Online ACT plus Vocational Support This condition combines the ACT program with three additional sessions conducted by licensed psychologists focusing on work-related functioning. These sessions guide participants in mapping barriers to work participation, identifying feasible adjustments, and creating a written long-term RTW plan that can be shared with employers and treating physicians. This component is intended to support coordinated and gradual work reintegration.

Study Rationale Existing interventions for clinical burnout are often broad, multimodal, and resource-intensive. They may rely heavily on rest-based strategies and physiologically oriented explanations that risk reinforcing avoidance and passivity. ACT offers a theoretically coherent alternative that emphasizes behavioral re-engagement, values-based action, and psychological flexibility, which may be particularly relevant in burnout characterized by disengagement and rigid coping patterns.

At the same time, many patients with burnout struggle to return to work, and early coordination between the individual, employer, and health care system is often lacking. Integrating structured vocational support into an ACT treatment may help translate behavioral gains into improved work functioning.

Study Design This is a three-arm, parallel-group, randomized controlled superiority trial with a 1:1:1 allocation ratio. A total of ca 400 participants will be recruited across Sweden and randomized to one of the three interventions. Treatments are delivered over 10 weeks via the secure digital platform BASS. Each treatment includes 10 self-guided online modules, therapist feedback via weekly written chat, and three scheduled video sessions. The ACT + Vocational arm includes three additional vocational sessions.

All assessments, consent procedures, and follow-ups are conducted online. Registry data on sick leave will be obtained from the Swedish Social Insurance Agency for the 12 months following treatment, allowing for objective evaluation of long-term functional recovery.

Assessments occur at baseline, weekly during treatment (selected measures), mid-treatment, post-treatment, and at 6- and 12-month follow-up.

Intervention Delivery and Therapist Training Therapists in the ACT and Recuperation conditions are clinical psychology students in their final semester who have completed training in CBT. Licensed psychologists with experience in rehabilitation deliver the ACT + Vocational condition. All therapists receive structured protocols, two days of training, and weekly supervision to ensure consistent delivery and fidelity across conditions.

Primary Objectives Symptom reduction Evaluate whether ACT produces greater improvements in self-rated burnout symptoms than a recuperation-focused treatment at post-treatment and at follow-up.

Return-to-work outcomes Determine whether adding structured vocational support to ACT reduces the number of registered net sick-leave days during the 12 months after treatment.

Secondary and Exploratory Objectives Secondary objectives include comparing treatments on perceived stress, depression, anxiety, insomnia, everyday memory problems, quality of life, functional impairment, treatment adherence, treatment response and remission, and adverse effects. Process outcomes (e.g., psychological flexibility, recuperation behaviors, RTW self-efficacy) will also be assessed to examine change processes. In addition, clinicians will provide prognostic ratings of expected symptom improvement and work participation outcomes at post-treatment and 12-month follow-up.

Economic evaluations will estimate cost-effectiveness from healthcare and societal perspectives. A qualitative sub-study will explore participants' experiences of ACT and, to a smaller extent, the other treatment arms.

Statistical Overview Repeated self-report outcomes will be analyzed using linear mixed-effects models with fixed effects for group, time, and group × time interactions, and random effects for participants. Sick-leave outcomes will be analyzed using negative binomial or Poisson regression models. All primary analyses will follow the intention-to-treat principle. Sensitivity, adjusted, and missing-data analyses (including multiple imputation) are planned.

The study is powered to detect small-to-moderate between-group effects on symptom trajectories and medium-sized differences in sick leave.

Data Monitoring and Safety Given the low-risk, non-pharmacological nature of the interventions, no independent data monitoring committee is established. Participants are monitored weekly, including automated alerts for worsening symptoms. Emergent risk (e.g., suicidal ideation) triggers same-day assessment by a licensed psychologist.

Adverse events will be recorded systematically during and after treatment.

Expected Contributions This study directly compares two theoretically distinct treatment models for clinical burnout and evaluates whether structured vocational support enhances functional recovery. It is among the first trials to assess an integrated, scalable ACT-based model for clinical burnout delivered entirely online. Findings may help identify effective strategies for reducing symptoms, supporting return to work, and informing the development of future evidence-based guidelines for clinical burnout.