In the case of Bonatrans India (Pvt.) Ltd. v. Bonatrans Employees Union (2026), the Supreme Court of India modified a High Court order to correctly assign the burden of proof in an industrial dispute regarding the legal status of employees.
Case Background and Dispute
The litigation involved a complaint filed by the Bonatrans Employees Union against the employer under the MRTU & PULP Act. The High Court had framed a preliminary issue to be decided by the Industrial Court: “Whether, the respondent/employer proves that the employees… are covered by the definition of workman under Section 2(s) of the Industrial Disputes Act, 1947?”.
The employer appealed to the Supreme Court, arguing that the High Court had erroneously cast the burden of establishing that the respondents were “workmen” onto the employer, rather than on the union asserting that status.
Key Findings of the Supreme Court
The Court allowed the appeal in part based on the following legal principles:
- Principle of Burden of Proof: The Court invoked the legal maxim Ei incumbit probatio qui dicit, non qui negat, which translates to “the burden of proof lies on the one who asserts, not on the one who denies”. This principle is embodied in Section 104 of the Bharatiya Sakshya Adhiniyam, 2023 (formerly Section 101 of the Indian Evidence Act, 1872).
- Application to Industrial Law: The Court clarified that when management denies an employer-employee relationship or disputes an employee’s status as a “workman,” the burden is on the complainant (the union) to prove that relationship or status. If the union fails to discharge this burden, the complaint must be closed without further inquiry.
- Correction of “Inadvertent” Error: The Supreme Court found the High Court’s phrasing was “ostensibly incorrect” and lacked precision. However, it noted that this was likely an “inadvertent” lapse in phrasing rather than a fundamental misunderstanding of the law by the High Court judge.
Conclusion and Directions
The Supreme Court modified the preliminary issue to correctly reflect the burden of proof:
“Whether, the complainant-union, proves that the employees, for whom the complainant-union is espousing the cause are covered by the definition of workman under Section 2(s) of the ID Act?”.
The Court directed that this be decided as a preliminary issue and set forth a schedule for the recording of evidence and oral submissions before the Industrial Court. All other points and contentions on the merits of the case were left open for the parties to argue before that forum.
2026 INSC 445
Bonatrans India (Pvt.) Ltd. V. Bonatrans Employees Union (D.O.J. 29.04.2026)



