Oil India Limited (OIL) has released the OIL India Grade A, B & C Executive Cadre Recruitment 2026 notification for 33 vacancies across various posts in Grade A, B, and C. The notification has been released on 15 October 2026, and the online application process started on 15 October 2026. Eligible candidates can submit their applications till 14 November 2026 at the official website www.oil-india.com.
The recruitment offers regular employment opportunities in various operational areas/offices of Oil India Limited across India. Candidates interested in applying should check the eligibility criteria, post-wise vacancies, age limit, application fee, selection process and pay scale details before submitting their forms.
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OIL India Grade A, B & C Recruitment 2026
Oil India Limited has announced 33 vacancies for eligible candidates. Candidates must complete the required registration process and meet the eligibility conditions mentioned in the official notification. The key details are provided below.
OIL India Grade A, B & C Recruitment 2026: Overview
| Organisation | Oil India Limited (OIL) |
|---|---|
| Recruitment Name | OIL India Grade A, B & C Executive Cadre Recruitment 2026 |
| Post Name | Superintending Research Scientist, Senior Officer (Mechanical), Senior Officer (Petroleum), Senior Internal Auditor, Hindi Officer (Official Language), Confidential Secretary |
| Advertisement Number | Not specified in notification |
| Total Vacancies | 33 |
| Application Start Date | 15 October 2026 (16:00 hours) |
| Last Date to Apply Online | 14 November 2026 (11:00 hours) |
| Job/Training Location | Various operational areas/offices of OIL |
| Employment Type | Regular |
| Monthly Salary | Grade C: Rs. 80,000-2,20,000 |
| Selection Process | Computer Based Test (CBT), Personal Interview (PI) / Proficiency Test / Skill Test, Pre-Employment Medical Examination |
| Official Website | www.oil-india.com |
OIL India Grade A, B & C Recruitment 2026 Important Dates
Candidates must submit their online applications between 15 October 2026 and 14 November 2026, as after that no application shall be accepted. The Computer Based Test (CBT) is tentatively scheduled for 28 December 2026.
| Events | Dates |
|---|---|
| Opening of OIL website for online submission | 16:00 hours on 15/10/2026 |
| Last date for submission of online application | 11:00 hours on 14/11/2026 |
| Date of Computer Based Test (CBT) | 28/12/2026 (Tentative) |
| Cut Off date for age, experience, qualification | 14/11/2026 |
OIL India Grade A, B & C Notification 2026 Out
Oil India Limited has released the official notification for the recruitment of Superintending Research Scientist, Senior Officer (Mechanical), Senior Officer (Petroleum), Senior Internal Auditor, Hindi Officer (Official Language), and Confidential Secretary. The notification includes complete information about the application process, post-wise and category-wise vacancies, eligibility criteria, age relaxation, selection procedure, pay scale, and other terms and conditions.
OIL India Grade A, B & C Detailed Notification PDF – Click to Download
OIL India Grade A, B & C Vacancy 2026
Oil India Limited has announced a total of 33 vacancies across various posts in Grade A, B, and C. The vacant seats are to be filled across various categories. Candidates can check the post-wise and category-wise distribution from the below table.
OIL India Grade A, B & C Post-Wise Vacancy
| S.No. | Post Name & Post Code | No. of Posts | Grade | Pay Scale | Upper Age Limit |
|---|---|---|---|---|---|
| 1 | Superintending Research Scientist [CH-01] | 05 (UR: 03, OBC-NCL: 01, SC: 01) | C | Rs. 80,000-2,20,000 | UR: 37, OBC-NCL: 40, SC: 42 |
| 2 | Senior Officer (Mechanical) [ME-02] | 14 (UR: 07, OBC-NCL: 03, SC: 02, ST: 01, EWS: 01) | B | Rs. 60,000-1,80,000 | UR: 27, OBC-NCL: 30, SC: 32, ST: 32, EWS: 27 |
| 3 | Senior Officer (Petroleum) [PE-03] | 04 (UR: 03, OBC-NCL: 01) | B | Rs. 60,000-1,80,000 | UR: 29, OBC-NCL: 32 |
| 4 | Senior Internal Auditor [AC-04] | 06 (UR: 04, OBC-NCL: 01, SC: 01) | B | Rs. 60,000-1,80,000 | UR: 29, OBC-NCL: 32, SC: 34 |
| 5 | Hindi Officer (Official Language) [HO-05] | 02 (UR: 01, OBC-NCL: 01) | A | Rs. 50,000-1,60,000 | UR: 29, OBC-NCL: 32 |
| 6 | Confidential Secretary [CS-06] | 01 (PwBD-01 Backlog) | A | Rs. 50,000-1,60,000 | GEN/EWS: 37, OBC-NCL: 40, SC/ST: 42 |
| Total | 33 |
Note: The number of posts indicated above is provisional and may vary depending upon the actual requirement of the Company. Out of the above notified vacancies, one (01) vacancy shall be reserved for PwBD candidates in Grade B.
OIL India Grade A, B & C Apply Online 2026
The online application process for OIL India Grade A, B & C Recruitment 2026 started on 15 October 2026. Eligible candidates can apply up to 14 November 2026 (11:00 hours). Applicants must complete the required registration on the OIL online application portal and follow the instructions provided for this recruitment.
OIL India Grade A, B & C Apply Online Link (Active) – Click Here
Documents Required
Candidates should keep the following documents ready for application and verification:
- Valid E-mail ID & Mobile Number
- Scanned copy of recent passport size color photograph (not older than 3 months)
- Scanned signature in JPG/JPEG format
- Admit Card/Pass Certificate/Marksheet of Matriculation/10th Standard for date of birth
- Degree/Diploma certificate along with mark sheets
- Relevant Post Qualification Work Experience certificates
- Caste Category certificate (SC/ST/OBC-NCL/EWS) in Government prescribed format
- Valid Disability certificate for PwBD candidates
- Valid Discharge Certificate/Book for Ex-Servicemen
- No Objection Certificate (NOC) from employer (if applicable)
OIL India Grade A, B & C Application Fee 2026
Candidates must pay the applicable examination fee to complete their application. The category-wise fee details are provided below.
| Category | Application Fee Amount (Rs.) |
|---|---|
| General/OBC (NCL) | Rs. 500 + Applicable taxes |
| SC/ST/PwBD/EWS/Ex-Servicemen | Nil |
Note: Application fee once paid will not be refunded under any circumstances. Candidates are advised to verify their eligibility before payment of the application fee.
How to Apply for OIL India Grade A, B & C Recruitment 2026?
Candidates can follow the steps below to complete the application process:
- Visit the official OIL website at www.oil-india.com.
- Click on the “Click Here” hyperlink next to the “To Register” bullet point to initiate the registration process.
- Register with your valid E-mail ID and Mobile Number.
- Login using your registered credentials.
- Fill in the required Personal Details, Additional Details, Communication Details, Qualification Details, Experience Details, and Declaration.
- Upload scanned photograph and signature in JPG/JPEG format.
- Pay the application fee online via SBI e-Pay Lite Payment Gateway (if applicable).
- Review the application carefully and submit it.
- Print and save the application form for future reference.
OIL India Grade A, B & C Selection Process 2026
The eligible candidates who will be applying successfully for the OIL India Grade A, B & C Recruitment 2026 have to go through a multi-stage selection process.
For Posts in Grade C and Grade B (Table I and Table II):
| Phase | Selection Test | Total Marks | Contribution to Final Score | Qualifying Marks |
|---|---|---|---|---|
| Phase-I | Computer Based Test (CBT) | 100 | 85 Marks | 50 out of 100 for UR posts and posts reserved for OBC-NCL & EWS |
| Phase-II | Personal Interview (PI) | 15 | 15 Marks | 40 out of 100 for posts reserved for SC, ST & PwBD |
Final Score = (CBT Marks obtained out of 100 × 0.85) + PI Marks obtained out of 15
Candidates qualifying in the CBT shall be called for Personal Interview (PI) in the ratio of 1:5.
For Posts in Grade A (Table III):
| Phase | Selection Test | Total Marks | Contribution to Final Selection | Qualifying Marks |
|---|---|---|---|---|
| Phase-I | Computer Based Test (CBT) | 100 | 100 Marks | 50 out of 100 for UR posts and posts reserved for OBC-NCL |
| Phase-II | Proficiency Test/Skill Test | 100 | Qualifying Only (No Weightage) | 50 out of 100 |
Final Merit List: Prepared solely on the basis of marks obtained in the CBT (out of 100) for candidates who qualify in the Proficiency Test/Skill Test.
Candidates who qualify in the CBT shall be shortlisted for the Proficiency Test/Skill Test in the ratio of 1:2.
OIL India Grade A, B & C Exam Pattern 2026
The OIL India Grade A, B & C Exam will be conducted in the Online mode and will consist of objective-type questions.
| Subject | Number of Questions | Total Marks |
|---|---|---|
| General/Financial Awareness | 25 | 25 |
| General English | 25 | 25 |
| Reasoning Ability & Computer Aptitude | 25 | 25 |
| Quantitative Aptitude | 25 | 25 |
| Total | 100 | 100 |
Duration: 01 hour and 30 minutes
Note: Compensatory time shall be allowed as per Government guidelines for Persons with Benchmark Disabilities.
OIL India Grade A, B & C Salary 2026
Selected candidates will be placed in the following pay scales:
| Post | Grade | Pay Scale |
|---|---|---|
| Superintending Research Scientist | C | Rs. 80,000-3%-2,20,000 (E5) |
| Senior Officer (Mechanical) | B | Rs. 60,000-3%-1,80,000 |
| Senior Officer (Petroleum) | B | Rs. 60,000-3%-1,80,000 |
| Senior Internal Auditor | B | Rs. 60,000-3%-1,80,000 |
| Hindi Officer (Official Language) | A | Rs. 50,000-3%-1,60,000 (E2) |
| Confidential Secretary | A | Rs. 50,000-3%-1,60,000 (E2) |
Additional Benefits:
- Besides Basic Pay and Industrial pattern of DA, other benefits include HRA or Company leased/self-lease accommodation, free medical benefits for self & dependents, Gratuity/PF, House Building Loan, Vehicle Loan, Group Insurance, etc.
- Approximate gross emoluments in Grade C, Grade B, and Grade A at minimum of scale will be around Rs. 1,50,000, Rs. 1,20,000, and Rs. 90,000, respectively.
- Provisionally selected candidates in Grade B will be appointed under the ‘Scheme for Induction Level Engineers/Officers on Probation’ and will serve a probationary period of one year.
- Post-Retirement Medical Benefits (PRMB) under Defined Contributory Scheme will be extended to those who superannuate from OIL after rendering a minimum of 20 years of continuous service.
OIL India Grade A, B & C Eligibility Criteria 2026
Educational Qualifications
For Superintending Research Scientist [CH-01]:
- Ph.D. in Chemistry with M.Sc. in Chemistry of min. 2 years duration with 60% marks; OR
- Ph.D. in Geology with Master’s Degree in Geology/Applied Geology of min. 2 years duration with 60% marks; OR
- Ph.D. in Chemical Engineering with Master’s Degree in Chemical Engineering of min. 2 years duration with 60% marks; OR
- Ph.D. in Petroleum Engineering with Master’s Degree in Petroleum Engineering of min. 2 years duration with 60% marks
- AND Minimum 04 years of Post Qualification Relevant Work Experience
For Senior Officer (Mechanical) [ME-02]:
- Bachelor’s Degree in Mechanical Engineering of minimum 04 years duration with minimum 65% marks (Excluding Automation/Automobile/Industrial/Power/Manufacturing/Production/Mechatronics/Mining/Marine/Robotics Engineering etc.)
For Senior Officer (Petroleum) [PE-03]:
- Master’s degree in Petroleum Engineering/Technology of minimum 02 years duration with minimum 60% marks and having Engineering at Graduation level
For Senior Internal Auditor [AC-04]:
- Associate Member of ICAI/ICMAI
For Hindi Officer (Official Language) [HO-05]:
- Post Graduate Degree in Hindi
- AND Minimum 03 years of Post Qualification Relevant Work Experience
For Confidential Secretary [CS-06]:
- Graduate with 01/02 years Diploma in Secretarial Practice OR Modern Office Management/Secretarial Practice OR Executive Assistant Diploma OR equivalent with knowledge of computer application
- AND Minimum 02 years post qualification experience
Age Limit (As on 14/11/2026)
| Post | UR | OBC-NCL | SC | ST | EWS |
|---|---|---|---|---|---|
| Superintending Research Scientist | 37 | 40 | 42 | – | – |
| Senior Officer (Mechanical) | 27 | 30 | 32 | 32 | 27 |
| Senior Officer (Petroleum) | 29 | 32 | – | – | – |
| Senior Internal Auditor | 29 | 32 | 34 | – | – |
| Hindi Officer (Official Language) | 29 | 32 | – | – | – |
| Confidential Secretary | 37 | 40 | 42 | 42 | 37 |
Age Relaxation:
- 5 years for candidates domiciled in Jammu & Kashmir (01.01.1980 to 31.12.1989)
- PwBD candidates as per Government Directives
- 5 years for Ex-Servicemen
- Upper age limit for internal candidates of OIL is 54 years
- 03 years age relaxation for candidates having PhD in relevant discipline (for posts under Table II & III)
- Maximum upper age limit shall not exceed 54 years for all candidates after all relaxations
Physical Fitness
Appointment of provisionally selected candidates is subject to being declared medically fit as per the standards prescribed in the Physical Fitness criteria available on OIL’s website. The provisionally selected candidates will have to undergo Pre-Employment Medical Examination (PEME) at OIL Hospital, Duliajan, Assam OR by a Government Medical Officer not below the rank of a Civil Surgeon OR by an Authorized Medical Officer of a company-empanelled hospital.
Also Read: AP DSC Recruitment 2026 Notification OUT: Apply Online Starts, Eligibility & Official PDF
OIL India Grade A, B & C Job Profile 2026
Superintending Research Scientist [CH-01]:
- Conducting research, analytical, experimental, and technology development activities
- Designing, executing, monitoring, and evaluating research projects
- Operating and managing laboratory, pilot plant, and testing facilities
- Preparing technical reports, SOPs, project documents, publications, and patents
- Ensuring compliance with HSE requirements, statutory regulations, and GLP
- Coordinating multidisciplinary R&D, field trials, external collaborations
Hindi Officer (Official Language) [HO-05]:
- Implementation and promotion of Official Language (Rajbhasha) policies
- Translation of official documents, reports, and communications between Hindi and English
- Monitoring and reporting on Official Language implementation
- Preparation and vetting of bilingual documents, terminology, and correspondence
Confidential Secretary [CS-06]:
- Managing confidential correspondence
- Scheduling and coordination of meetings
- Handling office documentation
- Liaison with internal and external stakeholders
- Providing administrative support to senior executives
- Proficiency in Shorthand and transcription
OIL India Grade A, B & C FAQs
Q1. When will the OIL India Grade A, B & C exam be conducted?
The Computer Based Test (CBT) is tentatively scheduled for 28 December 2026. The exact date shall be intimated at the time of issue of Admit Cards.
Q2. What is the salary for OIL India Grade A, B & C posts?
The pay scales are: Grade C: Rs. 80,000-2,20,000; Grade B: Rs. 60,000-1,80,000; Grade A: Rs. 50,000-1,60,000. Approximate gross emoluments at minimum of scale will be around Rs. 1,50,000, Rs. 1,20,000, and Rs. 90,000 for Grade C, B, and A respectively.
Q3. What is the selection process for OIL India Grade A, B & C Recruitment 2026?
For Grade B & C posts: CBT followed by Personal Interview. For Grade A posts: CBT followed by Proficiency Test/Skill Test. Final selection is subject to Pre-Employment Medical Examination.
Q4. What is the last date to apply for OIL India Grade A, B & C Recruitment 2026?
The last date for submission of online application is 11:00 hours on 14 November 2026.
Q5. How many vacancies are available in OIL India Grade A, B & C Recruitment 2026?
A total of 33 vacancies are available across six posts in Grade A, B, and C.
Q6. What is the application fee for OIL India Grade A, B & C Recruitment 2026?
General/OBC (NCL) candidates: Rs. 500 + applicable taxes. SC/ST/PwBD/EWS/Ex-Servicemen: Nil.
Q7. What is the cut-off date for age, experience, and qualification?
The cut-off date for age, experience, qualification, and all other matters shall be reckoned as 14/11/2026.
Q8. Can candidates apply for multiple posts?
If more than one application is received from a candidate, the most recent (current) application will be considered as final. However, candidates are advised to submit only one application for a particular post.
Q9. Is there any service bond for selected candidates?
Yes, selected candidates in Grade B will have to execute a bond to serve the Company for a minimum period of three years from the date of joining. However, Service Bond is not required for Post Code AC-04.
Q10. What is the posting location for selected candidates?
The provisionally selected candidates can be posted in any of the operational areas/offices of Oil India Limited as per the requirements of the Company. Although the projected vacancies are primarily for postings at Field Headquarters, Duliajan, Assam, the Company reserves the right to post selected candidates at any of its operational areas/offices.
