Oil & Gas
The activity codes this sector covers, how they split across hazard classes, the SGK work accident figures, and the Optifora modules that carry the work.
What this view covers
Crude petroleum and natural gas extraction together with coke and refined petroleum manufacturing. The code table also carries support activities for petroleum and gas extraction, gas distribution and pipeline transport; their accident figures are published under their own divisions, so they are not added to the table.
A sector view is not a partition: the same NACE code can appear in more than one sector, and sector figures are not added to one another.
Activity codes in this sector
Every code from the annex that falls into this sector; no row was trimmed.
| NACE code | Activity | Hazard class |
|---|
Workplace hazard class communiqué, Annex-1
Work accidents and occupational disease in this sector
From the annual statistics of the Social Security Institution, for the NACE divisions in this sector; 4/a and 4/b insured are added together.
| NACE division | Work accidents | Fatalities | Occupational disease |
|---|
What Optifora does in this sector
The same platform runs in every sector; what changes is the hazard class, the statutory hours and the volume of records.
Risk Assessment and Management Module
Risk assessment is critical for occupational health, safety and environmental (OHS&E) processes of your business.
Manage Your Periodic Inspections with Digital Transformation
130+ equipment types, automatic reminders, smart reporting
Every OHS process, in one portal
The items below are not a single module's feature but the platform's operating basis; each module is built on top of them.
Free tools for this sector
You can run the calculation without leaving this page; the calculators use the same official tables.
OHS Duration Calculator
Monthly working time for the OHS specialist and the workplace physician, by hazard class and employee count.
Emergency Team Calculator
How many firefighting, evacuation and first-aid staff a workplace needs.
Penalty Calculator
The 2026 administrative fine total for the violations, employee count and hazard class you pick.
Hazard class query
Hazard class by NACE code — 2,142 activities.
The figures are shown for information; the binding sources are the official communiqué and SGK's own publication.
Legal basis
The table shows the obligations of the legislation region you pick in the top bar; it refreshes without reloading the page when the region changes.
Legal basis — Türkiye
| Obligation | Legal basis | How the page covers it |
|---|---|---|
| Workplace hazard classes are determined by a communiqué issued by the Ministry in line with the opinion of a commission chaired by the Director General of Occupational Health and Safety, taking account of the short-term insurance premium tariff. | Occupational Health and Safety Law No. 6331, Art. 9(1) | The hazard class column of the activity code table on the Oil and gas page. |
| In determining the workplace hazard class the main activity carried on in that workplace is taken into account. | Occupational Health and Safety Law No. 6331, Art. 9(2) | The NACE code and activity columns of the table; a single row is picked for a workplace. |
| The hazard classes in which workplaces fall are set out in the Workplace Hazard Classes List in Annex 1 of the communiqué. | Communiqué on Workplace Hazard Classes, Art. 1 | The source line under the table naming Annex 1 of the communiqué; the page shows every code in that annex belonging to this sector without trimming. |
| Where there is doubt about the main activity, the purpose for which the workplace was established is considered; where more than one activity fits the definition, the one with the higher hazard class prevails. | Communiqué on Workplace Hazard Classes, Art. 2(1) and 2(3) | The low-hazard, hazardous and very hazardous filter above the table; a sector may hold more than one class. |
| Where the decision changes the hazard class, employers must carry out the work required by the new class within 90 days and notify the Directorate General of Occupational Health and Safety. | Communiqué on Workplace Hazard Classes, Art. 3(4) | The free tools block of the page; the duration calculator, the emergency team calculator and the penalty calculator all take the hazard class as an input. |
The list of activity codes and hazard classes on this page comes from Annex 1 of the Communiqué on Workplace Hazard Classes, which rests on Article 9 of Law No. 6331.