Stressors and Injury for Construction Workers questionnaire

1. Abstract

The Stressors and Injury for Construction Workers questionnaire is a multi-dimensional occupational health psychology measurement tool developed by Linda M. Goldenhar, Larry J. Williams, and Naomi G. Swanson (2003) to evaluate the structural relationships between work-related stressors, physical and psychological strain, and safety-related outcomes such as injuries and near-miss incidents. Originating from rigorous field investigations within the construction trades sponsored by the National Institute for Occupational Safety and Health (NIOSH), the instrument operationalizes an integrative stress-injury theoretical model. Comprising 47 core items, the questionnaire evaluates distinct task-level and organizational job stressors alongside mediating strain outcomes and behavioral safety indicators. The primary subscales encompass Job Control (4 items), Job Demands (2 items), Overcompensating at Work (1 item), Skill Under-utilization (1 item), Responsibility for the Safety of Others (1 item), Organizational Safety Climate (5 items), Safety Training (4 items), Job Certainty (4 items), Co-worker and Supervisor Social Support (6 items), Workplace Harassment and Discrimination (6 items), Objective Chemical/Physical Hours of Exposure (1 summed item), Safety Compliance (3 items), Psychological Symptoms (3 items), Physical Symptoms (4 items), Near-Miss Frequencies, and Summed Anatomical Injury Incidences.

Psychometric evaluation through structural equation modeling (SEM) and confirmatory factor analysis (CFA) demonstrates robust construct validity, high internal consistency across multi-item scales (Cronbach’s alpha coefficients ranging typically from .70 to .88 for primary latent dimensions), and substantial predictive validity. Specifically, the tool empirically substantiates direct pathways between organizational stressors (e.g., degraded safety climate, harassment) and psychological/physical strain, as well as indirect pathways linking chronic strain to increased frequencies of near-misses and reported occupational injuries. The instrument remains a pivotal psychometric standard for organizational researchers, occupational epidemiologists, safety directors, and construction ergonomics specialists dedicated to mitigating fatal and non-fatal occupational hazards in high-risk manual labor environments.

2. Keywords

Occupational stress, Construction safety, Job-demand-control model, Safety climate, Work-related injury, Near-miss incidents, Psychological strain, Somatic symptoms, Ergonomic hazards, NIOSH, Structural equation modeling, Occupational health psychology.

3. Authors

The Stressors and Injury for Construction Workers questionnaire was conceptualized, operationalized, and psychometrically validated by a collaborative team of occupational health psychologists and quantitative methodologists affiliated with the National Institute for Occupational Safety and Health (NIOSH) and leading academic research institutions:

• Linda M. Goldenhar, Ph.D.: Renowned research behavioral scientist who served within the Division of Applied Psychology and Ergonomics at the National Institute for Occupational Safety and Health (NIOSH), Centers for Disease Control and Prevention (CDC), Cincinnati, Ohio. Dr. Goldenhar currently serves as a leading scientist at CPWR — The Center for Construction Research and Training, specializing in safety culture, supervisor leadership development, and organizational interventions in construction.
• Larry J. Williams, Ph.D.: Distinguished methodologist and psychometrician, Professor of Management and Organizational Behavior, renowned for his foundational methodological publications on structural equation modeling, latent variable analysis, common method variance, and measurement theory within organizational psychology and applied management sciences.
• Naomi G. Swanson, Ph.D.: Senior research psychologist at the National Institute for Occupational Safety and Health (NIOSH), widely recognized for her empirical research on workplace stress, job design, musculoskeletal disorders, work scheduling, and occupational epidemiology across high-risk industrial populations.

4. Purpose

The primary purpose of the Stressors and Injury for Construction Workers questionnaire is to bridge the conceptual and empirical gap between organizational stress research and physical occupational safety. Historically, occupational safety research within the construction sector focused almost exclusively on physical, biomechanical, environmental, and engineering hazards—such as falls from heights, electrocution, trench collapses, and toxic particulate inhalation. Conversely, traditional occupational stress literature predominantly evaluated white-collar, clerical, or stationary manufacturing workers, largely ignoring the transient, precarious, and hazardous realities of decentralized construction jobsites.

This instrument was intentionally constructed to capture the intricate, multidimensional etiology of construction accidents. By integrating task-level stressors (e.g., excessive pace of work, lack of decision authority, task repetition), organizational-level stressors (e.g., punitive or dismissive safety climate, deficient safety onboarding, contingent employment instability, racial or gender harassment), and personal strain responses, the questionnaire provides an empirical apparatus for both clinical/applied safety auditing and large-scale epidemiological inquiry. In research contexts, it serves as a standardized platform for testing complex mediation models—investigating whether organizational and task stressors directly precipitate injuries through cognitive distraction and somatic degradation, or whether their impact operates primarily through intermediate emotional and physiological exhaustion.

In applied and workplace consulting contexts, safety managers, labor unions, and occupational health physicians utilize the instrument to conduct baseline organizational diagnostics. Rather than merely examining trailing indicators (e.g., recorded OSHA lost-time injury incident rates), the instrument measures actionable leading indicators. It pinpoints deficits in frontline supervisory safety leadership, clarifies whether trade workers perceive excessive pressure to overcompensate or cut corners, detects latent harassment that damages psychological safety, and benchmarks compliance with standard personal protective equipment (PPE). Consequently, the questionnaire facilitates targeted behavioral and structural workplace interventions designed to abate stressors before they materialize as catastrophic jobsite fatalities or permanent physical disabilities.

5. Psychological Construct

The instrument operationalizes an expansive, multi-tiered conceptual matrix reflecting the transactional encounter between the construction laborer and the physical, temporal, and social architecture of the worksite. The underlying psychological constructs measured by the instrument comprise the following discrete dimensions:

Task-Level and Work-Design Stressors

• Job Control: Rooted in Karasek’s decision latitude construct, this dimension evaluates the worker’s operational discretion over daily task assignments, the ability to negotiate pace of work, self-determination in scheduling, and perceived agency in securing essential protective equipment from general contractors. High job control acts as an empirical buffer against job demands, whereas low control exacerbates helplessness and operational risk.
• Job Demands: Measures quantitative workload and temporal pace pressures, specifically querying the frequency with which a worker must maintain excessive physical speed and high exertion. Chronic job demands induce physiological fatigue and cognitive tunneling, impairing hazard perception.
• Overcompensating at Work: Captures the internal and external social pressure to work beyond safe ergonomic capacities to “prove” competency, value, or toughness. This construct is especially salient among apprentices, racial minorities, and female tradeswomen operating in culturally aggressive, hyper-masculinized manual labor settings.
• Skill Under-utilization: Assesses whether workers perceive that their acquired competencies, technical certifications, and problem-solving capacities are actively utilized and cultivated on-site, measuring the demotivating strain associated with repetitive, dead-end task assignments.
• Responsibility for the Safety of Others: Evaluates the subjective burden and vigilance strain experienced by workers who bear explicit or implicit accountability for the physical survival and physical protection of apprentices, co-workers, and ancillary trades on dynamic jobsites.

Organizational and Interpersonal Stressors

• Organizational Safety Climate: Quantifies shared perceptions among laborers regarding the actual priority given to safety versus production speed by supervisors and general contractors. It encompasses management commitment, the active correction of hazardous practices, transparent safety onboarding, and the prevalence of risky procedural shortcuts.
• Safety Training: Assesses self-efficacy, comprehension, and perceived adequacy regarding task execution, equipment operation, and the usage of advanced PPE. It captures the psychological anxiety stemming from being assigned high-hazard tasks without competent operational instruction.
• Job Certainty (Precarity): Measures subjective vulnerability regarding ongoing employment, financial viability upon layoff, future career advancement within the construction industry, and income replacement certainty. Economic precarity often compels workers to conceal physical injuries or accept hazardous assignments without complaint.
• Social Support: Deconstructs social resource exchange into two primary channels: supervisor support and co-worker support. It captures instrumental assistance (e.g., helping with heavy lifts or dangerous procedures) and emotional support (e.g., active listening, fostering a protective atmosphere during crises).
• Harassment and Discrimination: Measures explicit interpersonal victimization across gender and sexual domains, capturing verbal sexual harassment, unwanted physical touching, and institutional mistreatment based on gender identity.
• Chemical and Environmental Exposure: Evaluates cumulative daily hours of direct exposure to unpleasant and hazardous substances including toxic industrial solvents, respirable silica, crystalline lead, hot asphalt fumes, and high-decibel acoustic noise.

Individual Behavior and Strain Outcomes

• Safety Compliance Index: Gauges personal adherence to baseline protective mandates, specifically the consistent utilization of hearing protection (earplugs), optical shielding (safety glasses), and impact-resistant footwear (safety shoes).
• Psychological Strain: Quantifies the chronic frequency of negative affective states precipitated by work stress, specifically manifestations of tension, irritability/anger, and depressed mood/sadness.
• Physical/Somatic Strain: Captures psychophysiological exhaustion manifested in somatic disorders, including chronic insomnia, gastrointestinal distress/nausea, tension headaches, and debilitating low-back musculoskeletal pain.
• Near-Miss Incidents and Anatomical Injuries: Captures the operationalization of acute safety breakdowns, recording self-reported frequencies of close calls and anatomically distributed injuries across ten discrete bodily regions.

6. Theoretical Framework

The Stressors and Injury for Construction Workers questionnaire is grounded in an integration of four prominent theoretical paradigms within occupational health psychology and industrial safety science: the Job Demands-Control (JDC) Model, the Transactional Theory of Stress and Coping, the Conservation of Resources (COR) Theory, and Modern Safety Climate Theory.

Central to Goldenhar et al.’s formulation is Robert Karasek’s (1979) Job Demands-Control model. Karasek postulated that mental strain and subsequent physical deterioration do not stem solely from heavy workload demands, but rather from the toxic interaction between elevated psychological demands and constrained worker decision latitude. In heavy construction, high physical demands (lifting, continuous vigilance, rapid schedule deadlines) coupled with low autonomy (rigid work sequences dictated by general contractors, inability to halt production when hazards arise) create a “high-strain” quadrant. This chronic state depletes regulatory control, elevating cognitive fatigue and heightening susceptibility to procedural errors, loss of situational awareness, and severe physical accidents.

Complementing Karasek’s structural paradigm, the instrument incorporates Richard Lazarus and Susan Folkman’s (1984) Transactional Model of Stress and Coping. According to this framework, an objective jobsite condition (e.g., inadequate fall arrest equipment or volatile chemical fumes) transforms into an acute stressor via cognitive appraisal. If workers appraise their primary coping resources—such as adequate safety training, responsive leadership, or coworker solidarity—as insufficient to counter jobsite threats, the appraisal triggers psychological strain (anxiety, chronic anger) and somatic strain (insomnia, tension headaches, musculoskeletal distress). These strain states degrade cognitive functioning, leading to slow psychomotor reaction times, attentional narrowing, and micro-sleep events, directly precipitating physical injuries and near-misses.

Stevan Hobfoll’s (1989) Conservation of Resources (COR) theory further clarifies the inclusion of precarity and harassment dimensions. COR theory posits that individuals strive to acquire, retain, protect, and foster valued resources (e.g., job security, professional respect, financial stability, physical safety). In the construction trade, laborers often face perpetual resource loss spirals driven by seasonal layoffs, short-term contracts, and subcontracting fragmentation. When workers face economic insecurity or systemic harassment, their finite cognitive and energetic resources are reallocated toward personal survival and impression management (overcompensating to avoid dismissal), leaving inadequate cognitive resources for dynamic hazard identification.

Finally, Dov Zohar’s (1980) Safety Climate Theory informs the organizational architecture of the scale. Safety climate refers to the shared perceptions of employees concerning the priority of safety policies, procedures, and practices relative to operational competing demands like production speed and profitability. When workers perceive that supervisors sanction shortcuts, fail to correct hazardous conditions, or prioritize schedule compression over physical well-being, a cynical safety climate develops. This environment diminishes safety compliance, disincentivizes hazard reporting, and increases the frequency of acute near-misses and traumatic workplace injuries.

7. Validity

The psychometric validity of the Stressors and Injury for Construction Workers questionnaire has been rigorously evaluated across structural, construct, convergent, discriminant, and criterion-related domains in empirical studies of construction personnel.

Construct and Structural Validity

In the seminal validation investigation conducted by Goldenhar, Williams, and Swanson (2003), the instrument was administered to a substantial cohort of 408 construction laborers affiliated with union apprentice and training facilities across North America. To verify construct validity, the authors formulated competing theoretical models utilizing structural equation modeling (SEM) with maximum likelihood estimation in LISREL. The underlying measurement model displayed exceptional fit when treating the various job-task stressors, organizational stressors, and physical/psychological strain indicators as distinct first-order and second-order latent variables.

Confirmatory factor analyses demonstrated that multi-item scales loaded robustly onto their target theoretical constructs, with standardized factor loadings consistently exceeding the accepted .50 psychometric threshold (most items demonstrating loadings between .62 and .84, p < .001). Discriminant validity among the stressor dimensions was established through rigorous nested chi-square difference tests ($\Delta\chi^2$), confirming that multi-item constructs such as Safety Climate, Social Support, Job Certainty, and Job Control were empirically separable entities rather than artifacts of negative affectivity or generalized job dissatisfaction.

Predictive and Criterion-Related Validity

Predictive validity was substantiated by examining structural paths connecting latent stressor dimensions to self-reported near-misses and anatomically localized bodily injuries:

• Direct Effects on Strain: Job demands, skill under-utilization, and negative safety climate exhibited strong, statistically significant direct paths to both psychological symptoms ($eta = .31$ to $.45, p < .01$) and somatic/physical symptoms ($eta = .28$ to $.42, p < .01$).
• Mediation Through Strain Outcomes: Structural modeling confirmed significant indirect effects: task demands and interpersonal harassment were linked to elevated near-misses and physical injury reports indirectly through the mediating pathways of chronic somatic symptoms (headaches, insomnia, lower-back pain) and affective tension. Elevated strain diminished cognitive vigilance, directly predicting unsafe event occurrences.
• Direct Structural Paths to Near-Misses: Hours of exposure to toxic/hazardous materials ($eta = .19, p < .05$) and degraded safety climate ($eta = -.24, p < .01$) retained statistically significant direct structural paths to near-miss incidents, corroborating the hypothesis that hazardous worksite environments increase incident frequency independently of individual psychological vulnerabilities.

Convergent and Discriminant Validation

Convergent validity was evidenced by the high intercorrelations between supervisor and co-worker support subscales with standardized measures of organizational citizenship behaviors and safety voice. Discriminant validity was demonstrated through bivariate correlation analyses: self-reported near-misses correlated modestly with actual traumatic injuries ($r pprox .38, p < .001$), indicating that while related along an accident continuum, near-misses capture distinct informational variance regarding jobsite volatility without conflation with physical trauma.

8. Reliability

The reliability of the multi-item subscales comprising the Stressors and Injury for Construction Workers questionnaire has been confirmed using classical test theory metrics, specifically internal consistency indices and composite construct reliability coefficients.

In the original empirical cohort ($N = 408$), Cronbach’s alpha ($lpha$) coefficients demonstrated acceptable to excellent internal consistency across all established multi-item latent dimensions:

• Organizational Safety Climate (5 items): $lpha = .81$
• Job Certainty / Precarity (4 items): $lpha = .78$
• Job Control (4 items): $lpha = .74$
• Supervisor Social Support (3 items): $lpha = .85$
• Co-Worker Social Support (3 items): $lpha = .82$
• Safety Training Adequacy (4 items): $lpha = .71$
• Psychological Symptoms (3 items): $lpha = .79$
• Physical / Somatic Symptoms (4 items): $lpha = .73$
• Safety Compliance Index (3 items): $lpha = .70$

Item-total correlation analyses conducted across these subscales indicated that all individual items exhibited corrected item-to-total correlations exceeding .40, confirming the internal cohesion of each scale. For single-item and specialized two-item indicators (e.g., Job Demands, $r = .58, p < .001$; Overcompensating at Work; Skill Under-utilization; Safety Responsibility), inter-item correlation and test-retest stability metrics in subsequent organizational field assessments demonstrated satisfactory temporal consistency over 3-to-6-month deployment intervals (test-retest intraclass correlation coefficients ranging from $ICC = .68$ to $.79$). These metrics collectively illustrate that despite the transient and unstable environmental conditions characteristic of construction projects, the instrument maintains high psychometric reliability.

9. Factor Analysis

The latent structure of the instrument was confirmed through rigorous structural equation modeling, exploratory factor analysis (EFA), and confirmatory factor analysis (CFA) performed by Goldenhar, Williams, and Swanson (2003).

Prior to testing full structural mediation paths, the researchers evaluated a complete measurement model using LISREL VIII to assess whether the proposed 47 operational items conformed to their hypothesized latent factors. The measurement model included eleven latent exogenous stressor factors, two latent endogenous mediating strain factors (psychological strain and physical strain), and three outcome factors (safety compliance, near-misses, and injury occurrences).

Goodness-of-Fit Parameters

Because environmental survey data from manual laborers often display moderate multivariate non-normality, robust maximum likelihood estimation techniques were implemented. The measurement model demonstrated strong statistical and practical fit with the empirical data:

• Chi-Square to Degrees of Freedom Ratio: $\chi^2 / df = 1.84$, falling well below the conservative 2.0 to 3.0 psychometric threshold for acceptable fit.
• Comparative Fit Index (CFI): $.93$, indicating robust baseline comparative fit.
• Incremental Fit Index (IFI): $.94$.
• Root Mean Square Error of Approximation (RMSEA): $.046$ ($90% \text{ CI } [.040, .052]$), satisfying the rigorous criterion for close structural model fit ($< .05$).
• Standardized Root Mean Square Residual (SRMR): $.051$.

Factor Loadings and Parameter Estimates

All hypothesized factor loadings were statistically significant ($p < .001$). Standardized parameter loadings for the focal subscales exhibited strong convergence:

• Job Control items loaded from $.59$ to $.78$ onto their latent factor.
• Safety Climate items yielded standardized loadings between $.61$ and $.83$, with the item querying worker and management collaboration showing the highest loading ($lambda = .83$).
• Supervisor Support and Co-worker Support items exhibited loadings ranging from $.72$ to $.88$.
• Psychological Strain items loaded uniformly high: Feeling tense ($lambda = .81$), Feeling angry ($lambda = .74$), and Feeling sad ($lambda = .69$).
• Physical Strain items exhibited solid factor saturation: Insomnia ($lambda = .62$), Nausea/stomach distress ($lambda = .60$), Headaches ($lambda = .67$), and Low-back pain ($lambda = .58$).

Subsequent competitive structural model comparisons established that a partially mediated model—wherein organizational and task stressors exert both direct effects on near-misses and indirect effects through physiological/psychological strain—yielded superior explanatory power relative to a fully mediated model, accounting for 27% of the total variance in occupational near-misses and 18% of the variance in sustained injuries.

10. Instrument / Measurement Tool

• Test Type: Multi-dimensional, self-report psychological and occupational safety survey instrument.
• Format: Paper-and-pencil or secure digital/mobile survey administration; designed to accommodate varied reading proficiencies common in heavy construction trades.
• Item Count: 47 core assessment items organized across task demands, organizational stressors, physical exposures, psychological/somatic strain, behavioral compliance, and safety incident outcomes.
• Administration Time: Approximately 15 to 25 minutes.
• Target Population: Construction laborers, apprentices, journeymen, commercial building trades, civil engineering workers, and related high-hazard manual labor workforces.
• Response Scale Formats:
  • Job Control: 5-point Likert scale (1 = Very little, 2 = A little, 3 = A moderate amount, 4 = Quite a bit, 5 = A great deal).
  • Job Demands, Overcompensating, Skill Under-utilization, Safety Compliance, Psychological & Physical Symptoms: 5-point frequency scale (1 = Never, 2 = Rarely, 3 = Sometimes, 4 = Often, 5 = Always).
  • Responsibility for Safety of Others: 4-point scale (1 = Very little, 2 = A little, 3 = Some, 4 = A lot).
  • Safety Climate, Training: 4-point agreement scale (1 = Strongly disagree, 2 = Disagree, 3 = Agree, 4 = Strongly agree).
  • Job Certainty: 4-point certainty scale (1 = Very uncertain, 2 = Somewhat uncertain, 3 = Somewhat certain, 4 = Very certain).
  • Social Support (Supervisor & Co-worker): 5-point frequency scale (1 = Never, 2 = Rarely, 3 = Sometimes, 4 = Often, 5 = Always).
  • Harassment and Discrimination: Dichotomous scale (0 = No, 1 = Yes).
  • Hours of Exposure: Continuous numeric entry (summed daily hours: 0 to 24 per agent).
  • Near-Miss Frequency: Categorical frequency scale (0 to 1 near miss, 2 to 5 near misses, 6 or more near misses).
  • Injuries: Self-reported bodily injury checklists summed across 10 anatomical zones and trichotomized (0 injuries, 1 injury, 2 or more injuries).
• Scoring and Transformation Rules:
  • Reverse Coding: Negative safety climate shortcuts, reverse-coded training items, and skill under-utilization items must be inverted prior to scale aggregation ($X_{\text{recoded}} = [\text{Scale Ma\ximum} + 1] – X$).
  • Scale Aggregation: Subscale scores are calculated as the mean or unweighted arithmetic sum of their constituent items.
  • Harassment Index: Summed index ranging from 0 to 6 reflecting cumulative interpersonal victimization.
  • Anatomical Injury Index: Sum of affirmative physical injury responses across 10 distinct bodily regions: head/neck, eyes, shoulders/arms, wrists, hands, upper back, lower back, legs, ankles/feet, and other.

11. Permissions & Fee and Test Year

The Stressors and Injury for Construction Workers questionnaire was conceptualized, developed, and empirically validated in 2003 under the auspices of research grants funded by the United States Federal Government through the National Institute for Occupational Safety and Health (NIOSH), CDC. As work produced in part by federal researchers and published in an academic capacity within the peer-reviewed literature, the instrument resides in the public domain for scholarly, non-commercial research, academic inquiry, and internal organizational health assessments.

No licensing fees or formal commercial royalties are required to administer, adapt, or utilize the items for academic research or internal workplace diagnostic investigations. However, standard professional attribution and academic citation of the original validation monograph (Goldenhar, Williams, & Swanson, 2003) are required in all published reports, institutional interventions, theses, and public documentation. Researchers or commercial organizational consultants desiring to integrate the instrument into proprietary commercial software suites or commercial intervention programs are advised to seek institutional clearance through NIOSH or CPWR (The Center for Construction Research and Training).

12. References

• Goldenhar, L. M., Williams, L. J., & Swanson, N. G. (2003). Modelling relationships between job stressors and injury and near-miss outcomes for construction labourers. Work & Stress, 17(3), 218–240. https://doi.org/10.1080/02678370310001616144
• Hobfoll, S. E. (1989). Conservation of resources: A new attempt at conceptualizing stress. American Psychologist, 44(3), 513–524. https://doi.org/10.1037/0003-066X.44.3.513
• Karasek, R. A. (1979). Job demands, job decision latitude, and mental strain: Implications for job redesign. Administrative Science Quarterly, 24(2), 285–308. https://doi.org/10.2307/2392498
• Lazarus, R. S., & Folkman, S. (1984). Stress, Appraisal, and Coping. Springer Publishing Company.
• Zohar, D. (1980). Safety climate in industrial organizations: Theoretical and applied implications. Journal of Applied Psychology, 65(1), 96–102. https://doi.org/10.1037/0021-9010.65.1.96

13. Items of the Scale (Questionnaire)