Mankayi v Anglogold Ashanti Ltd

The appellant (Mankayi) was employed as a mine worker underground by the respondent (Anglogold Ashanti) from January 1979 to September 1995. During this period, he was exposed to harmful dusts and gases, including silica dust. As a result, he contracted occupational diseases: silicosis, pulmonary tuberculosis, and obstructive airways disease. He was certified as suffering from a compensatable disease in terms of the Occupational Diseases in Mines and Works Act 78 of 1973 (ODIMWA) and received compensation of R16,320 from the Compensation Commissioner under ODIMWA. He then instituted a common law delictual claim against his employer for approximately R2.6 million in damages, alleging that the employer breached its duty of care by failing to provide a safe and healthy work environment. The respondent excepted to the particulars of claim, arguing that s 35(1) of the Compensation for Occupational Injuries and Diseases Act 130 of 1993 (COIDA) barred the common law claim. The appellant contended that he was not an 'employee' under COIDA because s 100(2) of ODIMWA excluded him from claiming benefits under COIDA. The High Court (Joffe J) upheld the exception.

• Whether s 35(1) of COIDA excludes a common law claim for damages by an employee who is entitled to benefits under ODIMWA rather than COIDA
• Whether s 100(2) of ODIMWA, which precludes persons entitled to benefits under ODIMWA from claiming under COIDA, means that such persons are not 'employees' for purposes of s 35(1) of COIDA
• Whether the interpretation of s 35(1) of COIDA violates the constitutional rights to equality (s 9), access to courts (s 34), and property (s 25)
• The application of interpretive principles including generalia specialibus non derogant and the presumption against harsh consequences

The appeal was dismissed. No order as to costs was made by agreement of the parties.

The ratio decidendi of this case is that s 35(1) of COIDA excludes common law claims for damages by all employees (as defined in COIDA) against their employers in respect of occupational injuries or diseases resulting in disablement or death, regardless of whether the employee is entitled to compensation under COIDA or under ODIMWA. The status of 'employee' under COIDA is determined by the employment relationship, not by the nature of the occupational disease contracted or the compensation scheme under which benefits are claimed. COIDA and ODIMWA must be read together as complementary statutes forming one system of compensation: COIDA is the principal Act of general application to all employees including mine workers; ODIMWA provides for special high-risk compensatable diseases at controlled mines. Section 100(2) of ODIMWA, which precludes persons entitled to benefits under ODIMWA from claiming under COIDA, merely prevents double compensation but does not remove such persons from the definition of 'employee' under COIDA or from the operation of s 35(1). The exclusion of common law liability in s 35(1) applies uniformly to all employers who contribute to compensation funds under either or both statutes. This interpretation is not inconsistent with the Constitution: the differentiation between compensation schemes is rationally connected to the legitimate governmental purpose of maintaining separate historical schemes and does not constitute unfair discrimination.

The court made several obiter observations. First, Malan JA noted that whether the benefits under ODIMWA are in fact inferior to those under COIDA could not be determined on exception and would require evidence, and if there are unequal benefits, discrimination could be remedied by equalization of benefits under the two schemes. Second, the court observed that the history of miners' phthisis and occupational disease legislation in South Africa, tracing back to 1911, consistently showed that none of the earlier legislation relating to pneumoconiosis or miners' phthisis specifically excluded or even mentioned employees' common law rights to claim damages against employers. Third, Malan JA commented that it would be particularly harsh to require mine owners to pay levies to compensation funds without receiving protection against delictual claims, especially where such protection is extended to all other employers under COIDA for identical diseases. Fourth, in discussing constitutional interpretation, the court cautioned that while courts must interpret legislation consistently with the Constitution, 'limits must be placed on the application of this principle' and interpretation 'should not be unduly strained'. Fifth, Harms DP noted that the appellant did not attack the constitutionality of the Acts themselves in these proceedings, and that any alleged discrimination may be due to problems in the regulations rather than the Acts. Finally, the court observed that the scope of rationality review under s 9(1) is narrow and courts should not make policy choices under the guise of rationality review.

This judgment is significant in South African law because it definitively clarifies the relationship between COIDA and ODIMWA, two statutory compensation schemes for occupational injuries and diseases. It establishes that s 35(1) of COIDA operates to exclude common law claims for damages by all employees, including mine workers who receive compensation under ODIMWA rather than COIDA. The judgment reinforces the principle that employees cannot pursue common law delictual claims against employers where statutory compensation schemes apply, even where there may be differences in the levels of compensation available under different schemes. It emphasizes the statutory 'bargain' whereby employers contribute to compensation funds in exchange for immunity from common law claims. The case is also important for its approach to statutory interpretation, particularly in harmonizing two related statutes and in applying constitutional interpretation principles. It demonstrates that where statutory language is clear, courts will not strain interpretation to avoid allegedly harsh consequences, and that rationality review under the equality provisions of the Constitution has a narrow scope. The judgment has significant implications for thousands of miners suffering from occupational diseases and for the mining industry's exposure to common law claims.