*2.2. Measures*

*Workplace bullying.* Experiences of workplace bullying were assessed using the sum score of the MOB-K [24]. The sum score is derived from four items addressing different aspects of workplace bullying (i.e., social isolation, bullying, defamatory statements, and overall quality of interaction), which are rated on a four-point Likert scale (1 = *not at all* to 4 = *very much*). Higher scores indicate higher intensity of experiences of workplace bullying. In the present study, the MOB-K showed good internal consistency (Cronbach's α = 0.83).

*Psychological health impairments.* To depict work-related psychological health impairments, we focused on work-related symptoms of exhaustion, distress, dysfunctional cognitions, and feelings of decreased efficacy and motivation, all associated with the burnout syndrome [20], and assessed by the "Burnout Screening Scale II" (BOSS II [25]). With 30 items rated on a six-point Likert scale (0 = *not at all* to 5 = *very much*), the BOSS II assesses physical, cognitive, and emotional symptoms occurring within the last seven days. Items are accumulated to a mean score, with higher scores indicating higher impairment. Quality of life was assessed using the sum score of the "EuroQoL 5 Item-index" (EQ-5D [26,27]). Five items addressing impairments in mobility, self-care, usual activities, pain/discomfort, and anxiety/depression are rated on a five-point Likert scale (1 = *not at all* to 5 = *very much*) and accumulated to a sum score, with higher scores indicating a higher quality of life. BOSS

II and EQ-5D showed good to high internal consistency in the present study (Cronbach's α = 0.83 and 0.96, respectively).

*Weight and socioeconomic status.* Participants were categorized into weight status groups according to their BMI (kg/m2), specifically, normal weight (18.5 ≤ BMI < 25.0 kg/m2), overweight (25.0 ≤ BMI < 30.0 kg/m2), and obesity (BMI ≥ 30.0 kg/m2), based on selfreported weight and height. Participants were further categorized into low, medium, and high socioeconomic status (SES) as derived from a modified Winkler Index, which accumulates information about the highest educational degree, professional degree, current profession, and household net income [28]. Sociodemographic and clinical characteristics of the total sample, sex-specific subsamples, and across the weight range are depicted in Table 1 and Supplementary Table S1, respectively.



Notes. BMI = body mass index (kg/m2); SES = socioeconomic status (Lange et al., 2007); MOB-K = Intensity of Bullying Coming from Co-Workers scale sum score (4–16\*, less favorable scores are asterisked; Pfaff, Bentz, & Brähler, 2007); BOSS II = Burnout Screening Scale II mean score (0–5\*; Hagemann & Geuenich, 2009); EQ-5D = EuroQoL 5 Item-index sum score (5\*–25; Hinz, Kohlmann, Stöbel-Richter, Zenger, & Brähler, 2014; Janssen et al., 2013). Statistical analyses used a two-tailed α < 0.05 significance level. \*—less favorable scores are asterisked.
