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2026 Supreme(SC) 250

SUPREME COURT OF INDIA
Rajesh Bindal, Vijay Bishnoi, JJ.
M. Thanigivelu And Ors. – Appellants
Versus
Tamil Nadu Electricity Board And Ors. - Respondents
Civil Appeal No. 862 of 2026 (Arising out of S.L.P. (C) No.8374 of 2025)
With
Tamil Nadu Electricity Board Engineers Association - Appellant
Versus
Tamil Nadu Electricity Board And Ors. - Respondents
Civil Appeal Nos. 863-864 of 2026 (Arising out of S.L.P. (C) Nos.9095-9096 of 2025)
WITH
V. Ranganathan And ors. - Appellants
Versus
Tamil Nadu Electricity Board And ors. - Respondents
Civil Appeal No. 865 of 2026 (Arising out of S.L.P. (C) No.12940 of 2025)
WITH
Tamil Nadu Electricity Board And ors. - Appellants
Versus
Rajan And ors. - Respondents
Civil Appeal Nos. 866-872 of 2026 (Arising out of S.L.P. (C) Nos.14044-14050 of 2025)
Decided On : 11-03-2026

Advocates appeared:
For the Appellant(s) : Mr. Sabarish Subramanian, AOR Ms. Madhavi Divan, Sr. Adv. Ms. Preetika Dwivedi, AOR Mr. Naveen Kumar Murthi, Adv. Mr. Abhisek Mohanty, Adv. Mr. Ansh Rajauria, Adv. Ms. Madhavi Divan, Sr. Adv. Mr. Nikhil Goel, Sr. Adv. Mr. Siddhartha Iyer, AOR Mr. Naveen Kumar Murthy, Adv. Ms. S. Varsha, Adv. Mr. Abhishek Mohanty, Adv. Mr. M. Mahamani, Adv. Mr. Ansh Rajauria, Adv. Mr. Vishnu Priyan, Adv. Mr. Atharva Kotwal, Adv. Ms. Srishti Ghoshal, Adv. Mr. Aman Gupta, Adv. Ms. Riddhi Jain, Adv.
For the Respondent(s): Mr. Nikhil Nayyar, Sr. Adv. Mr. T. V. S. Raghavendra Sreyas, AOR Mr. Siddharth Vasudev, Adv. Ms. Gayatri Gulati, Adv. Mr. A Velan , AOR Mr. Amit Anand Tiwari, Sr. A.A.G. Mr. Sabarish Subramanian, AOR Ms. Anusha Nagarajan, Adv. Ms. Jahnavi Taneja, Adv. Ms. Akansha Bhola, Adv. Mr. Vishnu Unnikrishnan, Adv. Ms. Tanvi Anand, Adv. Ms. Saushriya Havelia, Adv. Mr. Shoeb Alam, Sr. Adv. Mr. Tushar Srivastava, Adv. Mr. Vishal Sinha, Adv. Mr. K. Paari Vendhan, AOR Mr. Guru Krishna Kumar, Sr. Adv. Ms. Preetika Dwivedi, AOR Mr. Ashwin Kumar, Adv. Mr. Abhisek Mohanty, Adv. Mr. Ansh Rajauria, Adv. Mr. Gautam Narayan, Sr. Adv. Ms. Asmita Singh, AOR Ms. Asmita Singh, Adv. Ms. Ankita Makan, Adv. Mr. Senthil Jagadeesan, Sr. Adv. Mr. Jayanth Muth Raj, Sr. Adv. Mr. Siddhartha Iyer, AOR Ms. Srishti Ghoshal, Adv. Mr. Aman Gupta, Adv.

The court affirmed that the seniority of direct recruits is determined from their date of appointment and training, and not from when their probation commences, countering the High Court's earlier decision.

Headnote:(A) Tamil Nadu Electricity Board (Service Regulations), 1967 - Regulations 10(9), 87 and 97 - Inter-se seniority of Assistant Engineers - The court ruled that the seniority of directly recruited Assistant Engineers should be counted from their initial appointment, including training, rather than from probation commencement - The High Court's order to the contrary was set aside. (Paras 10, 15, 24, 25)

Facts of the case:
This case involves disputes over the seniority of Assistant Engineers appointed through two different recruitment processes: direct recruitment and internal selection, under the Tamil Nadu Electricity Board Service Regulations. The issue arose from various Board Proceedings determining conditions of training and probation.

Findings of Court:
The court concluded that the seniority of direct recruits should be established from the date of their appointment and training, as defined in the Regulations, and that B.P. No. 9, which reduced the training period, had no retrospective effect on seniority.

Issues: The main issue was the determination of inter-se seniority between direct recruits and internal candidates concerning the validity and interpretation of relevant Board Proceedings and Regulations.

Ratio Decidendi: The court emphasized that training is considered part of service, and therefore, seniority must be calculated from the date of joining, regardless of probation policies or further amendments.

Result: Appeals allowed.

Table of Content
1. overview of appeals concerning inter-se seniority. (Para 2 , 3)
2. summary of high court's findings on seniority. (Para 4 , 5 , 6)
3. arguments on behalf of the board. (Para 7 , 8 , 10)
4. arguments on behalf of internally selected candidates. (Para 12 , 13)
5. analysis of board proceedings relevant to the case. (Para 15 , 18)
6. conclusion and order allowing appeals. (Para 19 , 25)
7. court's reasoning on how seniority should be determined. (Para 21 , 22 , 23)

JUDGMENT :

Rajesh Bindal, J.

1. Leave granted.

2. This judgment will dispose of a bunch of appeals involving identical issues. Vide common judgment1[Dated 06.09.2024], passed by the Division Bench of the High Court2[High Court of Judicature at Madras], seven writ appeals3[W.A. Nos.2093, 2094, 2095, 2685, 2686 of 2010 and 1443 C 1444 of 2018] were disposed of. The Division Bench of the High Court had set aside the order passed by the Single Bench whereby writ petitions filed by the private respondents herein were dismissed. The dispute pertains to inter-se seniority of the Assistant Engineers (Electrical)4[Hereinafter ‘AE’], directly recruited and internally selected candidates. The appellants are the direct recruits, and the private respondents are the internally selected candidates.

3. Briefly, the facts relevant to the issue under consideration, as pointed out by the learned counsel for the parties at the time of hearing, are as follows.

3.1 Tamil Nadu Electricity Board5[For short, ‘the Board’] contemplated selection to the post of AE on direct recruitment basis and for internal candidates. Both have their separate quotas.

3.2. Vide Board Proceeding6[For short, ‘BP’] No.29 dated 27.11.2000 issued by the Board, written examination was introduced for the selection to the post of AE on direct recruitment basis. Vide another BP No.39 issued on 04.12.2000, for carrying out selection for the post of AE, even for internal candidates, a written examination was proposed. Prior to that, on 03.11.2000, the Board had called for information regarding eligible candidates for appearance in examination for the internal selection quota. It was for the purpose of considering their suitability for promotion as AEs.

3.3 The prospective candidates, seeking selection through internal selection process, challenged the communication dated 03.11.2000 by filing Writ Petition No.20512 of 2000 before the High Court. The High Court granted interim stay on 06.12.2000.

3.4 BP No.35 was issued by the Board on 13.12.2000 providing that all appointed as AE (Training) shall undergo training, for a period of two years including induction training of three months with consolidated emoluments of Rs.7,500/- per month. After carrying out the process of selection in December 2000 on direct recruitment basis, 200 AEs were appointed.

3.5 Subsequent thereto, after due process of selection, 100 more AEs were appointed on direct recruitment basis on 28.03.2001.

3.6 BP No.59 was issued by the Board on 13.11.2001 to dispense with the written examination for internal candidates from the date of issuance of BP.

3.7 BP No.9 issued by the Board on 23.04.2002 pertains to direct recruits providing that on completion of 3 months of intensive training AE (Trainee) shall be designated as AEs and their probation shall commence from the date of joining in the Board and will be for two years.

3.8 Thereafter, the selection process for internal candidates was carried out and the select list was issued on 06.05.2002. Consequently, appointments were made in that quota.

3.9 Writ Petition No.19596 of 2002 was filed by the internal selectees challenging BP No.9 vide which the training period of the candidates selected on direct recruitment basis was reduced from two years to three months. Subsequent thereto, number of other writ petitions were filed claiming the same relief.

3.10 On 31.10.2007, inter-se seniority of AEs selected in the year 2000 was issued. It was revised on 01.04.2008. The same was also impugned before the High Court

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