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Last Date to Apply – 18 December 2025
Fuel your career at India’s oldest refinery. IOCL’s Assam Oil Division, Digboi Refinery invites aspiring technicians and graduates to join its nation-building apprenticeship drive under Advertisement No. AOD-DR/TA-2025-26. A total of 112 Apprentice positions are open across Trade and Technician streams—welcoming Class 12 pass, ITI (Fitter), Diploma, and Graduates in approved disciplines.
Key window: Online applications are live from 28 November 2025 to 18 December 2025. Selection is merit-based with no written test, and training periods vary by code. Review eligibility, reservation, and two-step application requirements (NATS/NAPS + IOCL portal) before you apply to ensure a valid submission.
Important: Read the complete IOCL Digboi Apprentice Recruitment 2025 notification to confirm discipline-specific criteria, age limits, and document verification rules prior to registration.
Job overview – IOCL Digboi Refinery Recruitment 2025
| Attribute | Details |
|---|---|
| Hiring organisation: | Indian Oil Corporation Limited (IOCL) — Registered Office: IndianOil Bhavan, G-9, Ali Yavar Jung Marg, Bandra (East), Mumbai – 400 051 |
| Advertisement no.: | AOD-DR/TA-2025-26 |
| Total vacancies: | 112 Apprentices |
| Job location: | IOCL Digboi Refinery, Digboi, Assam |
| Selection mode: | No written test; merit based on qualifying marks (with tie-breakers by DOB, then Matric %) |
Important dates – IOCL Digboi Refinery Recruitment 2025
| Event | Date |
|---|---|
| Notification date: | 28 November 2025 |
| Application start (NATS/NAPS & IOCL portal): | 28-11-2025 (10:00 Hrs) |
| Last date to apply: | 18-12-2025 (17:00 Hrs) |
| Tentative list for document verification: | 27-12-2025 |
| Tentative document verification dates: | 02-01-2026 to 07-01-2026 |
Vacancy details – IOCL Digboi Refinery Recruitment 2025
| Code | Trade/Discipline | Qualification | Training period | Seats |
|---|---|---|---|---|
| 101 | Trade Apprentice – Attendant Operator (Chemical Plant) | 3-year B.Sc. (Maths/Physics/Chemistry or Industrial Chemistry) | 12 months | 40 |
| 102 | Trade Apprentice (Fitter) – Mechanical | Matric + ITI (Fitter), min 2 years, Pass | 12 months | 5 |
| 103 | Trade Apprentice (Boiler) – Mechanical | 3-year B.Sc. (Maths/Physics/Chemistry or Industrial Chemistry) | 24 months | 2 |
| 104 | Technician Apprentice – Chemical | 3-year Diploma in Chemical/ Petrochemical/ Chemical Tech/ Refinery & Petrochemical Engg. | 12 months | 11 |
| 105 | Technician Apprentice – Mechanical | 3-year Diploma in Mechanical Engg. | 12 months | 30 |
| 106 | Technician Apprentice – Electrical | 3-year Diploma in Electrical / Electrical & Electronics Engg. | 12 months | 10 |
| 107 | Technician Apprentice – Instrumentation | 3-year Diploma in Instrumentation / Instrumentation & Electronics / Instrumentation & Control / Applied Electronics & Instrumentation | 12 months | 5 |
| 108 | Trade Apprentice – Secretarial Assistant | 3-year BA/BSc/BCom | 15 months | 2 |
| 109 | Trade Apprentice – Accountant | 3-year BCom | 12 months | 1 |
| 110 | Trade Apprentice – Data Entry Operator (Fresher) | Class XII pass | 12 months | 5 |
| 111 | Trade Apprentice – Data Entry Operator (Skill Certificate) | Class XII + Skill Certificate in ‘Domestic Data Entry Operator’ (training < 1 year) | 12 months | 1 |
| Total | 112 | |||
Age limit – IOCL Digboi Refinery Recruitment 2025
| Category | Age criteria |
|---|---|
| General/EWS: | 18–24 years as on 30-11-2025 |
| SC/ST: | Upper age relaxation: 5 years |
| OBC (NCL): | Upper age relaxation: 3 years |
| PwBD: | Upper age relaxation: 10 years (additional relaxations for SC/ST/OBC as applicable) |
Salary structure – IOCL Digboi Refinery Recruitment 2025
| Component | Details |
|---|---|
| Stipend: | As prescribed under Apprentices Act, 1961/1973 and Apprentices Rules, 1992; as per IOCL guidelines |
| PPE: | Safety shoes & helmet (returnable) for codes 101–107 |
| Accommodation/HRA: | Not provided |
| Leave: | General Leave: 32 days (8 per quarter); Casual Leave: 12 days/year (pro-rata); holidays as per establishment |
| Insurance: | Accident insurance coverage provided |
Eligibility criteria – IOCL Digboi Refinery Recruitment 2025
| Requirement | Details |
|---|---|
| Educational marks: | Minimum 50% aggregate (45% for SC/ST/PwBD where applicable); regular full-time only |
| Recognitions: | ITI from NCVET/SCVT; Diplomas/Graduation from recognized institutes; no distance/correspondence |
| Higher qualifications: | BE/BTech/MBA/CA/LLB/MCA or similar not eligible |
| Experience: | Not eligible if ≥1 year job experience post-qualification |
| Qualification currency: | Not eligible if ≥5 years since prescribed qualification as on 30-11-2025 |
| PvBD applicability: | Identified seats for codes 102, 105, 106, 107, 108, 109, 110, 111 |
| One trade rule: | Apply for only one trade/discipline (BSc PCM/IC: codes 101 or 103 or 108; BCom: 108 or 109) |
Category-wise breakdown – IOCL Digboi Refinery Recruitment 2025
| Category | Seats |
|---|---|
| UR (GEN): | 49 |
| OBC (NCL): | 30 |
| SC: | 8 |
| ST: | 15 |
| EWS: | 11 |
| PwBD (horizontal): | 4 identified seats across notified codes |
| Total: | 112 |
Application fee – IOCL Digboi Refinery Recruitment 2025
| Fee type | Amount |
|---|---|
| Application fee: | Not specified (no fee mentioned in notification) |
How to apply – IOCL Digboi Refinery Recruitment 2025
| Step | Action |
|---|---|
| Step I – NATS/NAPS: | Register and apply on the appropriate portal: NAPS for codes 101,102,103,108,109,110,111; NATS/BOAT for codes 104,105,106,107. Use Digboi Refinery Establishment IDs: NATS – EASTIC000002; NAPS – E01201800001. |
| Profile accuracy: | Ensure personal, educational, category, and aggregate percentage details are correct on NATS/NAPS. |
| Step II – IOCL portal: | Complete application on https://www.iocrefrecruit.in between 28-11-2025 (10:00 Hrs) and 18-12-2025 (17:00 Hrs). Use the same email and mobile as NATS/NAPS. |
| Uploads: | Prepare color photo and signature (JPG, ≤50 KB each) for upload. |
| Validation: | Both Step I and Step II must be completed with matching factual details; otherwise, application is invalid. |
Essential links – IOCL Digboi Refinery Recruitment 2025
| Link | Purpose & description |
|---|---|
| Detailed Notification (PDF) | Full official advertisement AOD-DR/TA-2025-26 with disciplines, quotas, eligibility, and application steps. |
| Apply Online – IOCL Refineries Portal | Complete Step II application after registering/applying on NATS/NAPS; track application status and updates. |
| NATS Registration – BOAT Student Login | Register and apply for Technician Apprentice codes 104, 105, 106, 107 using Establishment ID EASTIC000002. |
| NAPS Registration – Candidate Login | Register and apply for Trade Apprentice codes 101, 102, 103, 108, 109, 110, 111 using Establishment ID E01201800001. |
| IOCL Official Website | Corporate information, notices, medical fitness guidelines, and apprenticeship updates for Digboi Refinery. |
Documents required – IOCL Digboi Refinery Recruitment 2025
| Document | Notes |
|---|---|
| Class X certificate: | Proof of date of birth (Board-issued) |
| Class XII / ITI / Diploma / Graduation marksheets: | All semester/year-wise marksheets as applicable |
| Final certificate: | Class XII / ITI (NCVET/SCVT) / Diploma / Graduation certificate |
| CGPA conversion: | Official conversion to percentage from the institute, if applicable |
| Result date certificate: | From head of institution, if not printed on marksheet |
| Category certificates: | SC/ST/OBC(NCL) declaration; EWS Income & Asset; PwBD certificate as per rules |
| Skill certificate (Code 111): | ‘Domestic Data Entry Operator’ certificate (training < 1 year) |
| NATS/NAPS registration print: | Applicant details page |
| Affidavit (Annexure-A): | Second-time apprenticeship declaration, if applicable |
| Photo ID (original): | Aadhaar/PAN/Voter ID/Driving License/Passport |
Exam pattern – IOCL Digboi Refinery Recruitment 2025
| Stage | Details |
|---|---|
| Written test: | No written test. Selection based on aggregate marks in prescribed qualification. |
| Tie-breaking: | Date of birth (older first); if same, higher Matriculation percentage. |
Selection procedure – IOCL Digboi Refinery Recruitment 2025
| Stage | Timeline & details |
|---|---|
| Merit list: | Prepared on descending order of aggregate qualifying marks; preference to first-time apprentices. |
| Document verification: | Tentatively 02-01-2026 to 07-01-2026; call list published on 27-12-2025. |
| Medical fitness: | Pre-engagement medical examination as per IOCL guidelines and Apprentices Act; PwBD per RPwD Act. |
| Offer of engagement: | Issued to finally shortlisted and medically fit candidates. |
Job location – IOCL Digboi Refinery Recruitment 2025
| Unit | Address |
|---|---|
| IOCL Digboi Refinery | Digboi Refinery Unit, Digboi, Tinsukia District, Assam, India |
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IOCL Digboi Apprenticeship 2025 – Frequently Asked Questions
1 What is the total number of apprentice vacancies and the advertisement number?
There are 112 apprentice vacancies under Advertisement No. AOD-DR/TA-2025-26 at IOCL Digboi Refinery.
2 What are the application start and end dates?
Applications open on 28 November 2025 (10:00 Hrs) and close on 18 December 2025 (17:00 Hrs) on both NATS/NAPS and IOCL portals.
Complete both steps: portal registration and IOCL application.3 Is there any written test for selection?
No written test. Selection is merit-based on aggregate marks in the prescribed qualification with tie-breakers on date of birth, then Matriculation percentage.
4 What are the age limits and relaxations?
Age 18–24 years as on 30-11-2025 for General/EWS. Relaxations: SC/ST +5 years, OBC (NCL) +3 years, PwBD +10 years (additional for SC/ST/OBC as applicable).
5 Which qualifications are accepted for different apprentice codes?
- 101/103: 3-year B.Sc. (Maths/Physics/Chemistry or Industrial Chemistry)
- 102: Matric + ITI (Fitter, ≥2 years, Pass; NCVET/SCVT)
- 104–107: 3-year Diplomas in specified disciplines
- 108: 3-year BA/BSc/BCom
- 109: 3-year BCom
- 110: Class XII (Fresher)
- 111: Class XII + Skill Certificate in ‘Domestic Data Entry Operator’ (<1 year)
6 How do I apply—what are the two mandatory steps?
Step I: Register and apply on the appropriate portal—NAPS for codes 101, 102, 103, 108, 109, 110, 111; NATS (BOAT) for codes 104, 105, 106, 107.
Step II: Complete the application on the IOCL Refineries portal within the given dates using the same email and mobile as on NATS/NAPS.
Ensure matching details in both steps to avoid invalid applications.7 What are the Establishment IDs for Digboi on NATS and NAPS?
NATS (BOAT): EASTIC000002 | NAPS: E01201800001
8 Are higher professional qualifications eligible (e.g., BE/BTech, MBA)?
No. Candidates with higher professional qualifications (BE/BTech, MBA, CA, LLB, MCA, or similar) or those who have completed them before joining are not eligible.
9 Is there an application fee?
The notification does not specify any application fee.
10 What documents are required for verification?
- Class X certificate (DOB proof)
- All semester/year-wise marksheets and final certificates
- CGPA-to-percentage conversion (if applicable)
- Result publication date certificate (if not on marksheet)
- SC/ST/OBC(NCL)/EWS/PwBD certificates as per prescribed formats
- Skill certificate (Code 111)
- NATS/NAPS registration print
- Affidavit (Annexure-A) if second-time apprenticeship
- Original Photo ID (Aadhaar/PAN/Voter/Driving License/Passport)
11 What is the selection flow and tentative DV schedule?
Merit list based on qualifying marks → Document Verification (02–07 Jan 2026; list on 27 Dec 2025) → Pre-engagement medical fitness → Offer of engagement to eligible and fit candidates.