Safety Officer Requirement Calculator | How Many Safety Officers Does Your Site Need?
Free tool to check whether your factory, construction site, mine or dock must appoint safety officers, and how many, under the OSH Code 2020, the Gujarat OSH Rules 2025 and the OSH (Central) Rules 2026.
Safety Officer Requirement Calculator
Answer three or four questions about your workplace. The calculator shows the number of safety officers the law requires, which rule it comes from, and at what headcount the number goes up.
Your result
Guidance based on the rules listed below. State rules and notifications can change, so confirm with your Inspector-cum-Facilitator or a qualified consultant.
Safety Officer Requirement at a Glance
| Workplace | Safety officer compulsory from | Number of safety officers |
|---|---|---|
| Factory | 500 workers (OSH Code s.22(2)) | Set by state rules. Gujarat: 1 up to 1,500; 2 up to 3,000; +1 per additional 3,000 |
| Factory with a hazardous process | 250 workers (OSH Code s.22(2)) | Gujarat: 1 up to 1,000; 2 up to 2,000; +1 per additional 2,000 |
| Major Accident Hazard factory (Gujarat) | 100 workers (Gujarat Rule 20(A)) | 1 up to 500; 2 up to 1,500; 3 up to 3,000; +1 per additional 1,500 |
| Building or construction work | 250 workers (OSH Code s.22(2)); in Gujarat also 50 workers on high-risk work | Gujarat: 1 for 250, 2 up to 500, 3 up to 750, 4 up to 1,000, +1 per 500. Central Rules: 1 up to 500, 2 up to 1,000, 3 up to 2,000, 4 up to 5,000, +1 per 2,000 |
| Mine | 100 workers (OSH Code s.22(2)) | 1 up to 500, +1 per additional 500 (Central Rules, rule 20) |
| Dock work | 500 workers (Central Rules, rule 18) | 1 up to 1,000; 2 up to 2,000; 3 up to 5,000; 4 up to 10,000; +1 per 5,000 |
How to Read Your Result
- Required (number shown): appoint that many qualified safety officers and notify the appointment to your Inspector-cum-Facilitator. In Gujarat, the notice must include each officer's qualifications and terms of service.
- Not required by law: your headcount is below the threshold. You still need someone competent to manage safety. Many units use a part-time or retainer safety professional.
- Two tagged results: for construction sites the Gujarat rules and the Central Rules use different scales. The calculator shows both and marks the one that applies to your location.
- Next step-up: the result tells you at what headcount you will need one more safety officer, so you can plan recruitment before an expansion or project peak.
When Do You Need This Check?
- Labour code transition. The OSH Code came into force on 21 November 2025. Thresholds and scales differ from the old Factories Act and BOCW rules, so recheck your numbers. Our OSH Code compliance guide covers the wider changes.
- New factory or expansion. Adding a shift or a hazardous process can push you over a threshold.
- Project mobilisation. Construction headcount rises quickly at peak. Plan safety officers into the construction HSE plan from day one.
- Inspections and audits. Inspectors, clients and certification auditors check the appointment, qualifications and notification. Keep them in your HSE legal register.
- Contractor control. Principal employers often require contractors to bring their own safety officers. See our contractor safety management guide.
Data to Collect Before You Calculate
| Input | Where to get it | Practical tip |
|---|---|---|
| Number of workers | Muster roll, attendance and contractor registers | Use the number ordinarily employed, not the lowest day. For projects, use the planned peak. |
| Hazardous process | First Schedule of the OSH Code; your factory licence | Chemicals, pharmaceuticals, paints, fertilisers, petroleum and many more are listed. |
| Major Accident Hazard status | MSIHC Rules notification or your on-site emergency plan | MAH units in Gujarat need a safety officer from 100 workers. |
| High-risk construction work | Method statements and work schedule | In Gujarat, Schedule I work with 50 or more workers needs at least one safety officer. |
| Appropriate government | Ownership and sector | State rules for most private sites; Central Rules for central PSUs, mines, docks and similar. |
Safety Officer Scales Explained
Factories in Gujarat (Gujarat OSH Rules 2025, Rule 20(A))
| Workers | Ordinary factory | Hazardous process factory | Major Accident Hazard factory |
|---|---|---|---|
| Below 100 | – | – | – |
| 100 to 249 | – | – | 1 |
| 250 to 499 | – | 1 | 1 |
| 500 to 1,000 | 1 | 1 | 1 up to 500, then 2 |
| 1,001 to 1,500 | 1 | 2 | 2 |
| 1,501 to 2,000 | 2 | 2 | 3 |
| 2,001 to 3,000 | 2 | 2 + 1 per additional 2,000 | 3 |
| Above 3,000 | 2 + 1 per additional 3,000 | 2 + 1 per additional 2,000 | 3 + 1 per additional 1,500 |
Building and construction work
| Building workers | As per Gujarat OSH Rules 2025 (Schedule II) | As per OSH (Central) Rules 2026 (rule 18) |
|---|---|---|
| 50 to 249, high-risk (Schedule I) work | 1 | – |
| 250 | 1 | 1 |
| 251 to 500 | 2 | 1 |
| 501 to 750 | 3 | 2 |
| 751 to 1,000 | 4 | 2 |
| Above 1,000 | 4 + 1 per additional 500 | 3 up to 2,000; 4 up to 5,000; then +1 per additional 2,000 |
“Per additional” includes any part: in Gujarat, 1,001 building workers need 5 safety officers. Mines need 1 safety officer up to 500 workers and 1 more for every additional 500 or part.
Worked Example: Chemical Plant and Its Expansion Project in Gujarat
A chemical plant in Gujarat employs 1,200 workers and carries on a hazardous process. It is building a new unit, where the contractor will have 800 workers at peak.
| Part of the site | Rule | Calculation | Safety officers |
|---|---|---|---|
| Plant, hazardous process, 1,200 workers | Gujarat Rule 20(A) | 1,001 to 2,000 workers | 2 |
| Same plant if it were an ordinary factory | Gujarat Rule 20(A) | 500 to 1,500 workers | 1 |
| Expansion project, 800 building workers | Gujarat Schedule II | 751 to 1,000 workers | 4 |
| Same project under the Central Rules | Central rule 18 | 501 to 1,000 workers | 2 |
Quick scenarios
| Situation | Workers | Safety officers |
|---|---|---|
| Ordinary engineering factory, Gujarat | 450 | Not required by law (needed from 500) |
| MAH storage terminal, Gujarat | 120 | 1 |
| Steel erection site, Gujarat | 120 | 1 (high-risk work with 50 or more workers) |
| Mine | 1,200 | 3 |
| Dock work | 3,000 | 3 |
The Law on Safety Officers
| Law / rule | What it says |
|---|---|
| Occupational Safety, Health and Working Conditions Code, 2020, section 22 | In force from 21 November 2025. Safety officers are compulsory in factories with 500 or more workers, factories with a hazardous process and 250 or more, building or construction work with 250 or more, and mines with 100 or more. The appropriate government prescribes the number, qualifications and duties. The Code replaces the Factories Act, 1948 (section 40B required safety officers from 1,000 workers) and the BOCW Act. |
| Gujarat Occupational Safety, Health and Working Conditions Rules, 2025 | Notified on 6 June 2025. Rule 20 and Schedule II set the scales for factories and building work, Rule 21 the qualifications, Rule 22 the duties. See also our note on Gujarat's OSH rules. |
| OSH (Central) Rules, 2026 (G.S.R. 345(E), 8 May 2026) | Rule 18: dock work from 500 workers and building or construction work from 250. Rule 20: mines from 100. Rule 14: a safety committee where 500 or more workers are employed. |
| Other states | Each state notifies its own OSH rules for factories and state-sphere construction. The thresholds in section 22 apply everywhere; check your state's scale. |
Who Can Be Appointed as a Safety Officer (Gujarat)
| Workplace | Qualification and experience (Gujarat Rule 21) |
|---|---|
| Factory | Degree in chemical, mechanical, electrical or fire engineering with 2 years' supervisory experience in a factory; or a degree in physics or chemistry with 5 years; or a diploma in chemical, mechanical or electrical engineering with 6 years. Plus a degree or diploma in industrial safety recognised by the State Government, and knowledge of the local language. |
| Building or construction work | Degree in civil or construction engineering with 2 years' supervisory experience in construction, or a diploma with 5 years. Plus a degree or diploma in industrial safety recognised by the State Government. |
Common Mistakes
- Using the old 1,000-worker rule. Section 40B of the Factories Act no longer applies. The OSH Code threshold is 500, or 250 for hazardous processes.
- Missing the hazardous or MAH status. A chemical unit with 300 workers needs a safety officer even though it is below 500.
- Counting only permanent staff. Headcount swings with contractors and shifts. Plan for the ordinary or peak number and confirm what to include with your Inspector-cum-Facilitator.
- Giving the safety officer other jobs. In Gujarat, safety officers on construction sites must not be given work unconnected with or detrimental to their safety duties (Schedule II).
- Not notifying the appointment. The appointment, qualifications and terms of service must be sent to the Inspector-cum-Facilitator.
- No records or training matrix. Safety officers need inspection, training and incident records. A digital training matrix saves hours every month.
Safety Officer Services by Himaya Prevention
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Need safety officers for a plant or project? Send us your headcount, location and start date for a manpower proposal. Industrial safety consultation services · sales@himpre.com · WhatsApp +91 79 9060 2143
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This calculator is a guide based on the OSH Code 2020, the Gujarat OSH Rules 2025 and the OSH (Central) Rules 2026 as notified. State rules, notifications and interpretations can change, and some states may set different scales. Confirm your requirement with the Inspector-cum-Facilitator or a qualified consultant. For safety officer supply or compliance support, contact Himaya Prevention.
Frequently Asked Questions
How many safety officers are required for 500 workers?
Under the OSH Code 2020, a factory with 500 or more workers must appoint safety officers. In Gujarat, an ordinary factory with 500 to 1,500 workers needs one safety officer. A construction site with 500 workers needs two under the Gujarat rules and one under the OSH (Central) Rules 2026.
When is a safety officer mandatory in India?
Section 22 of the OSH Code 2020 makes safety officers compulsory in factories with 500 or more workers, factories carrying on a hazardous process with 250 or more, building or other construction work with 250 or more, and mines with 100 or more. In Gujarat, Major Accident Hazard factories need one from 100 workers.
Is a safety officer required for 1,000 workers under the Factories Act?
Section 40B of the Factories Act, 1948 used a 1,000-worker threshold, but the OSH Code 2020 replaced it from 21 November 2025. The threshold is now 500 workers for factories, or 250 for factories with a hazardous process.
How many safety officers are required on a construction site?
From 250 workers. Under the Gujarat OSH Rules 2025: one for 250, two up to 500, three up to 750, four up to 1,000 and one more per additional 500. Under the OSH (Central) Rules 2026: one up to 500, two up to 1,000, three up to 2,000, four up to 5,000 and one more per additional 2,000.
What qualification is required for a safety officer in Gujarat?
For factories, a degree in chemical, mechanical, electrical or fire engineering with 2 years' supervisory experience (or other combinations), plus a degree or diploma in industrial safety recognised by the State Government. For construction, a civil or construction engineering degree with 2 years' experience or a diploma with 5 years, plus the industrial safety qualification.
Can a factory below 500 workers manage without a safety officer?
An ordinary factory below 500 workers does not have to appoint one by law, unless it carries on a hazardous process with 250 or more workers or is a Major Accident Hazard unit with 100 or more in Gujarat. It still needs a competent person to manage safety, which many units arrange through a retainer safety professional.
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References
- The Occupational Safety, Health and Working Conditions Code, 2020, section 22 (in force from 21 November 2025).
- Gujarat Occupational Safety, Health and Working Conditions Rules, 2025, Notification No. GR/2025/76/FAC/142021/68396/M3 dated 6 June 2025 (Gujarat Government Gazette Extraordinary, Extra No. 87): Rules 17 to 23 and Schedules I and II.
- Occupational Safety, Health and Working Conditions (Central) Rules, 2026, G.S.R. 345(E) dated 8 May 2026: Rules 14, 18 and 20.
- Manufacture, Storage and Import of Hazardous Chemical Rules, 1989 (Major Accident Hazard installations).
Prepared and reviewed by the HSE team at Himaya Prevention Private Limited, Vadodara, India. Last reviewed: October 2026. Health | Safety | Environment | Fire | Quality · designed & automated by hsefq.com
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