NOM-035-STPS-2018 ("NOM-035") is Mexico's federal standard for identifying, analyzing, and preventing psychosocial risk factors in the workplace. It became mandatory for all companies with more than 50 employees in October 2019 and for smaller organizations in October 2020.
Despite being in effect for several years, compliance remains inconsistent. Many HR departments complete the initial assessment but then let it sit — unactioned and undocumented — until the next inspection cycle. This guide walks through what the standard actually requires, where organizations most commonly fall short, and how a well-designed pulse survey program can handle the heavy lifting automatically.
Disclaimer: This article is for informational purposes. It does not constitute legal advice. Consult your legal counsel or occupational health specialist for compliance decisions specific to your organization.
What NOM-035 actually requires
The standard has four main obligations, organized by the size of your workforce:
For all employers (1+ employees)
- Establish a policy for preventing psychosocial risk factors and promoting a favorable organizational environment.
- Adopt preventive measures when traumatic events occur in the workplace.
- Disseminate the policy and results to all workers.
For employers with 16–50 workers
- Apply the Reference Guide I (a simplified checklist) to identify psychosocial risk factors.
- Evaluate the results and implement corrective actions.
- Maintain records for at least 12 months.
For employers with 50+ workers
- Apply the full Reference Guide II or III (validated instruments with 46 or 72 items respectively).
- Conduct the evaluation at least every two years.
- If results indicate high or very high risk, implement an intervention program within three months.
- Maintain records for at least five years.
- Assign a responsible person for monitoring and follow-up.
The 9 domains NOM-035 measures
The standard defines psychosocial risk factors across nine categories:
- Conditions in the work environment — physical risk factors, inadequate or unsafe conditions.
- Workload — excessive demands, time pressure, emotional demands.
- Lack of control over work — inability to influence pace, methods, or schedules.
- Working hours — extended hours, rotating shifts, insufficient recovery time.
- Interference between work and personal life — inability to balance responsibilities.
- Deficient leadership — lack of support, poor communication, inconsistent management.
- Workplace relationships — conflict, lack of cooperation, violence or harassment.
- Violence — psychological violence, discrimination, or abuse from any source.
- Inadequate recognition of work performance — lack of feedback, unfair evaluation, poor compensation perception.
NOM-035 compliance checklist
Use this checklist to audit your current compliance posture:
Phase 1 — Policy & Communication
Foundation requirements applicable to all organizations regardless of size.
- Written policy on psychosocial risk factor prevention is drafted and approved by leadership.
- Policy is posted visibly in the workplace and/or shared digitally with all employees.
- A protocol for responding to traumatic workplace events (accidents, violence, deaths) is documented.
- A designated responsible person (responsible or committee) is formally assigned for NOM-035 follow-up.
Phase 2 — Evaluation
For 16–50 employees: Reference Guide I. For 50+ employees: Reference Guide II or III.
- The correct reference guide for your headcount has been selected and administered.
- The evaluation was conducted anonymously and communicated as such to employees.
- Results were analyzed by domain (not just an aggregate score).
- Individual-level data is protected; only aggregated or group-level results are shared.
- The evaluation is documented with date, number of participants, and response rate.
Phase 3 — Action
Required when any domain scores at medium, high, or very high risk level.
- Priority domains (those scoring high or very high) are formally identified.
- An intervention plan with specific actions, owners, and timelines is written for each priority domain.
- Intervention plan is communicated to the relevant teams or departments.
- Progress against the intervention plan is tracked at least quarterly.
- Results and actions are communicated back to employees (aggregate level).
Phase 4 — Records & Re-evaluation
Documentation and continuous measurement requirements.
- All evaluation instruments, results, and action plans are filed and retained (5 years for 50+ employees; 12 months for others).
- The evaluation is scheduled to repeat within the required interval (every 2 years for 50+ employees).
- A mechanism exists for ongoing monitoring between formal evaluation cycles.
- An anonymous reporting channel for workplace violence or severe distress is available to all employees.
Where organizations most commonly fail
Completing the evaluation but taking no action
This is by far the most common failure mode. Organizations complete the Reference Guide, calculate scores, file the document — and then do nothing. Under NOM-035, the evaluation is not the end state; it is the starting point. An organization that documents high workload scores and does nothing about them is technically out of compliance, even if the survey was administered correctly.
Treating it as an annual checkbox rather than a living program
NOM-035 requires re-evaluation every two years, but the intent of the standard is continuous improvement. Organizations that run a formal evaluation every two years with no monitoring in between are meeting the letter but not the spirit of the law — and are also at higher risk of missing significant deterioration in working conditions between cycles.
Inadequate anonymity protections
The standard requires that individual responses remain confidential. In small teams (fewer than 10 people), even aggregate results can effectively identify individuals. Organizations working with small groups must either combine groups for reporting purposes or use specialized suppression rules to protect respondent identity.
Failing to document the feedback loop
NOM-035 requires communicating results and actions back to employees. This is frequently skipped. In an IMSS or STPS inspection, the inspector will ask not only for the evaluation records but also for evidence that results were shared — typically in the form of meeting minutes, email notifications, or an internal posting.
How Bloomder automates NOM-035 compliance
Bloomder's survey templates include a NOM-035–aligned question bank built around the nine risk factor domains. Instead of administering a formal 72-item or 120-item instrument once every two years, Bloomder distributes these questions across regular pulse cycles — so you maintain continuous monitoring of psychosocial risk indicators while also generating the documentation required for formal compliance reporting.
The platform automatically generates compliance-ready reports that map your pulse data to the NOM-035 domain structure, with risk level classifications and trend lines. When a domain approaches or exceeds the medium-risk threshold, the system alerts the designated HR owner — giving you weeks to act before the problem is formally reportable.
For organizations approaching their re-evaluation deadline, Bloomder can administer the full Reference Guide II or III as a one-time survey and incorporate the results into the ongoing compliance record, satisfying the formal evaluation requirement without a separate vendor engagement.
To understand how Bloomder structures the compliance documentation trail for STPS auditors, see how Bloomder covers NOM-035 & ISO 45003 compliance.
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