Oil India Limited, a Maharatna company (the highest status the Government of India gives to a state-owned company), is hiring for 32 executive posts in one go. The six jobs are very different from each other — a PhD research scientist, mechanical and petroleum engineers, a chartered or cost accountant, a Hindi officer and a confidential secretary — and most are based at Duliajan in Assam. You can apply online from 15.10.2026 till 11:00 AM on 14.11.2026.
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Recruitment Overview
| Field | Details |
|---|---|
| Post Name | Superintending Research Scientist, Senior Officer, Senior Accounts Officer, Hindi Officer, Confidential Secretary |
| Organization | Oil India Limited (OIL), a Maharatna public sector company |
| Notification / Advertisement No. | HRAQ/REC-EX-B/2026-03 (dated 15.10.2026) |
| Location | Assam — mainly Field Headquarters, Duliajan; transfers possible to any OIL area |
| Total Vacancies | 32 (31 regular posts + 1 backlog post for disabled candidates) |
| Qualification | Depends on the post — BE/BTech, Master’s, PhD, CA/CMA, PG in Hindi or graduate with secretarial diploma (see Eligibility below) |
| Age Limit | Maximum 42 years as on 14.11.2026 (varies by post — see table below) Check your age eligibility → |
| Selection Process | Grade B and C: Computer Based Test (CBT) → Interview. Grade A: CBT → Skill Test (pass-or-fail) |
| Pay Scale | Rs 50,000 to Rs 2,20,000 a month (scale depends on grade); about Rs 90,000 to Rs 1,50,000 total pay at the start |
| How to Apply | Online only, on the OIL application portal |
| Official Notification | Download Notification PDF |
| Official Website / Apply Online | Apply Online — OIL Application Portal |
Important Dates
| Event | Date |
|---|---|
| Advertisement Date | 15.10.2026 |
| Online Application Starts | 15.10.2026 (4:00 PM) |
| Last Date to Apply Online | 14.11.2026 (11:00 AM) |
| Cut-off Date for Age, Experience and Qualification | 14.11.2026 |
| Computer Based Test (CBT) | 28.12.2026 (tentative — exact date will come with the admit card) |
Application Fee
| Category | Fee |
|---|---|
| General / OBC (NCL) | Rs 500 + applicable taxes |
| SC / ST / PwBD / EWS / Ex-Servicemen | Nil |
| How to pay | Online through SBI e-Pay Lite; the fee is never refunded |
Vacancy Details
| Post (Code) | Grade | UR | OBC (NCL) | SC | ST | EWS | Total |
|---|---|---|---|---|---|---|---|
| Superintending Research Scientist (CH-01) | C | 3 | 1 | 1 | – | – | 5 |
| Senior Officer (Mechanical) (ME-02) | B | 7 | 3 | 2 | 1 | 1 | 14 |
| Senior Officer (Petroleum) (PE-03) | B | 3 | 1 | – | – | – | 4 |
| Senior Accounts Officer / Senior Internal Auditor (AC-04) | B | 4 | 1 | 1 | – | – | 6 |
| Hindi Officer (Official Language) (HO-05) | A | 1 | 1 | – | – | – | 2 |
| Confidential Secretary (CS-06) | A | – | – | – | – | – | 1 (PwBD backlog) |
| Total | 18 | 7 | 4 | 1 | 1 | 32 |
The single Confidential Secretary post is a backlog vacancy kept for PwBD candidates (Persons with Benchmark Disabilities — people with a disability of 40% or more). The notification also says one Grade B vacancy is reserved for PwBD candidates, without naming the post, and that all post numbers are provisional and can change.
Eligibility Criteria
| Criterion | Detail |
|---|---|
| Superintending Research Scientist — education | PhD in Chemistry, Geology, Chemical Engineering or Petroleum Engineering, plus a 2-year Master’s in the same subject with 60% marks |
| Superintending Research Scientist — experience | 4 years of full-time work after that qualification, in research or technology roles in oil and gas, energy, chemicals or materials |
| Senior Officer (Mechanical) | 4-year BE/BTech in Mechanical Engineering with at least 65% marks (some branches are not accepted — see Common Mistakes) |
| Senior Officer (Petroleum) | 2-year Master’s in Petroleum Engineering or Technology with 60% marks, and an engineering degree at graduation level |
| Senior Accounts Officer / Senior Internal Auditor | Associate Member of ICAI or ICMAI (a qualified chartered or cost accountant); the membership certificate is a must |
| Hindi Officer — education and experience | Post Graduate degree in Hindi, plus 3 years of work on official language (Rajbhasha) implementation, promotion or translation |
| Confidential Secretary — education | Graduate with a 1- or 2-year diploma in Secretarial Practice, Modern Office Management or Executive Assistant (or equal), and computer knowledge |
| Confidential Secretary — experience | 2 years of secretarial work; you also need shorthand and transcription skills |
| Age Limit | The upper limit depends on the post and your category — see the age table below Check your age eligibility → |
| Nationality | Indian nationals only |
Upper Age Limit (as on 14.11.2026, in years)
| Post | General (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 Accounts Officer / Senior Internal Auditor | 29 | 32 | 34 | – | – |
| Hindi Officer (Official Language) | 29 | 32 | – | – | – |
| Confidential Secretary | 37 | 40 | 42 | 42 | 37 |
A dash (–) means no post is listed for that category. These limits already include the normal category relaxation.
Extra Age Relaxation
| Category | Relaxation |
|---|---|
| PhD in the relevant subject (Grade A and B posts) | 3 years |
| Ex-Servicemen | 5 years |
| Domiciled in Jammu and Kashmir from 01.01.1980 to 31.12.1989 | 5 years |
| PwBD candidates | As per Government rules |
| Current OIL employees (internal candidates) | Upper age limit is 54 years |
| Maximum age after all relaxations | 54 years for every candidate |
So the limits in the age table are already final for your category — you do not add OBC, SC or ST relaxation again. A general-category Senior Officer (Mechanical) candidate must be 27 or younger on 14.11.2026, an OBC (NCL) candidate 30 or younger, and only the extra relaxations above can be added on top, up to a hard stop at 54.
Who Should Apply
- These are executive posts on a pay scale, and every selected person serves a one-year probation (a trial year after joining) before being confirmed in writing.
- The posts are mainly at Field Headquarters, Duliajan in Assam, but OIL can post and transfer you to any of its working areas or offices, so apply only if you are fine with moving.
- Senior Officers in Grade B (Mechanical and Petroleum) must sign a bond to serve OIL for at least 3 years from the joining date; the accounts post has no bond.
- If you work in a government department or public sector company for the posts that ask for experience (scientist, Hindi Officer, Confidential Secretary), you need at least 2 years in the next lower pay scale, and a No Objection Certificate (NOC — a letter from your employer allowing you to apply).
- If you work in a private company for those same posts, the company must have an annual turnover of at least Rs 500 crore, and you must be able to show proof of it.
Selection Process
| Stage | Details |
|---|---|
| Grade B and C — Stage 1: CBT | 100 marks, 1 hour 30 minutes. Pass marks are 50 (General, OBC, EWS) or 40 (SC, ST, PwBD). It counts for 85% of your final score |
| Grade B and C — Shortlist | Candidates who pass the CBT are called for interview in a 1:5 ratio (5 candidates per post), in order of CBT marks |
| Grade B and C — Stage 2: Interview | 15 marks, no pass mark. Final score = CBT marks × 0.85 + interview marks (out of 15); no other scaling is used |
| Grade A — Stage 1: CBT | 100 marks, 1 hour 30 minutes. Pass marks are 50 (General, OBC) or 40 (PwBD). The merit list is made from CBT marks only |
| Grade A — Stage 2: Skill Test | 100 marks, pass-or-fail only (50 to pass). Candidates are called in a 1:2 ratio, in order of CBT marks |
| Hindi Officer skill test | Translation, essay writing, computer application and bilingual (Hindi and English) typing |
| Confidential Secretary skill test | Shorthand and transcription |
| Medical Fitness | Selected candidates must pass a medical test (PEME) at OIL Hospital, Duliajan, or another approved hospital |
In short: for the Grade B and C posts the interview adds up to 15 marks to your score, so it can change your rank. For the two Grade A posts the skill test is only pass-or-fail, so your rank depends entirely on the CBT.
Salary and Benefits
| Component | Detail |
|---|---|
| Grade C — Superintending Research Scientist | Pay scale Rs 80,000 to 2,20,000; about Rs 1,50,000 total pay a month at the start |
| Grade B — Senior Officers | Pay scale Rs 60,000 to 1,80,000, starting basic pay Rs 60,000; about Rs 1,20,000 total pay at the start |
| Grade A — Hindi Officer, Confidential Secretary | Pay scale Rs 50,000 to 1,60,000; about Rs 90,000 total pay a month at the start |
| Allowances | Industrial-pattern DA (Dearness Allowance, extra pay to offset rising prices) and HRA (House Rent Allowance) or company-leased housing |
| Benefits | Free medical care for you and your dependents, gratuity, PF, house building loan, vehicle loan and group insurance |
| Post-retirement medical benefit | For those who retire from OIL after at least 20 years of continuous service in OIL, any other CPSE or the Government |
| Probation | 1 year for all posts |
In plain terms, a new Grade A officer starts at roughly Rs 90,000 a month in total pay, Grade B at about Rs 1.2 lakh and Grade C at about Rs 1.5 lakh — these are OIL’s own approximate figures for the bottom of each scale.
How to Apply
- Open the OIL online application page and click “Click here” next to “To Register”.
- Fill in your name, date of birth, mobile number and email ID, press “Generate OTP”, and enter both OTPs (one comes by SMS, one by email). A User ID and password will then reach your email and mobile.
- Log in, click “Go To Application”, and fill in your personal, communication, qualification and experience details. Upload your photo and signature as JPG files.
- Check the preview, then submit. If you are General or OBC (NCL), pay Rs 500 plus taxes online through SBI e-Pay Lite; other categories pay nothing.
- Print the submitted form, or save it as a PDF, and keep it safe.
Note: you can edit the form only before you press Submit. After that nothing can be changed, and the application cannot be withdrawn.
Documents Required
| Document | Format / Notes |
|---|---|
| Passport-size photograph | JPG/JPEG, 100 to 200 KB, 3.5 cm × 4.5 cm, white background, not older than 3 months Resize your photo and signature → |
| Signature | JPG/JPEG, 80 to 150 KB, signed with a black pen on white paper (scan the signature area only) |
| Class 10 certificate or marksheet | The only document accepted as proof of your date of birth |
| Degree and mark sheets | All years or semesters, or a consolidated mark sheet; a provisional certificate is accepted if the degree is not issued yet |
| Experience documents | Letter on company letterhead with designation, dates and duties, plus any two of: pay slip, increment letter, PF statement, appointment letter |
| Category certificates | SC/ST/OBC (NCL), EWS and PwBD (40% or more disability) certificates in the Government format |
| Ex-Servicemen documents | Discharge book or service certificate, and Zila Sainik Welfare Office registration card |
| NOC (if employed) | Government and PSU employees need a No Objection Certificate; it can be given later with an undertaking |
| Photo ID | PAN, Driving Licence, Voter ID, Aadhaar or Passport — must be carried for the test |
Important Links
| Link | URL |
|---|---|
| Download Official Notification (PDF) | Download Notification PDF |
| Apply Online | Apply Online — OIL Application Portal |
| Official Website — Current Openings | oil-india.com Current Openings |
| Official Syllabus (PDF) | Download Syllabus PDF |
| Join Telegram Channel | Join Telegram Channel |
| Join WhatsApp Channel | Join WhatsApp Channel |
Common Mistakes to Avoid
- Do not apply for Senior Accounts Officer / Senior Internal Auditor without an ICAI or ICMAI membership certificate — such applications are not eligible.
- For Senior Officer (Mechanical), degrees in Automation, Automobile, Industrial, Power, Manufacturing, Production, Mechatronics, Mining, Marine and Robotics Engineering are not accepted, and the degree name must match the notification.
- Only full-time experience gained after your qualifying degree counts; part-time, internship, freelance, consultancy, school or UG teaching work, and research fellowships done before the degree, are ignored.
- Use an email ID and mobile number that only you use and that stay active till the end; neither can be changed later, and the category you pick in the form cannot be changed either.
- Send only one application and check your eligibility before paying — the fee is never refunded, and if you apply twice only the latest form counts.
- Keep your Class 10 certificate ready, because OIL accepts no other document as proof of your date of birth.
Frequently Asked Questions
What is the last date to apply for Oil India Recruitment 2026?
You can apply online till 11:00 AM on 14.11.2026.
How many posts are there in Oil India Recruitment 2026?
There are 32 posts — 5 research scientists, 14 Senior Officers (Mechanical), 4 Senior Officers (Petroleum), 6 accounts and audit officers, 2 Hindi Officers and 1 Confidential Secretary — and OIL says the number can change.
What qualification is needed?
It depends on the post: PhD plus Master’s for the scientist, BE/BTech in Mechanical for that Senior Officer, a Master’s in Petroleum Engineering for the other, ICAI or ICMAI membership for accounts, a PG in Hindi for Hindi Officer, and a graduate with a secretarial diploma for Confidential Secretary.
What is the age limit?
The upper limit runs from 27 to 42 years depending on the post and category as on 14.11.2026, and it already includes OBC, SC and ST relaxation.
What is the application fee?
General and OBC (NCL, meaning non-creamy layer) candidates pay Rs 500 plus taxes, while SC, ST, PwBD, EWS and Ex-Servicemen pay nothing.
What is the selection process?
Grade B and C posts have a Computer Based Test followed by an interview, Grade A posts have a Computer Based Test followed by a pass-or-fail skill test, and the test is tentatively on 28.12.2026.
What is the salary?
Total pay at the start is about Rs 90,000 a month for Grade A, Rs 1,20,000 for Grade B and Rs 1,50,000 for Grade C, according to OIL.
Where will I be posted, and is there a bond?
Most posts are at Duliajan in Assam but you can be transferred anywhere, and Senior Officers in Grade B (Mechanical and Petroleum) must sign a 3-year service bond.
Disclaimer: The information above has been compiled from the official notification for the convenience of job seekers. Candidates are advised to verify all details from the official website before applying.
