Transman (Pty) Limited v South African Post Office Limited and Another

On 30 March 2000, Transman, Autenmas Placements CC, and SAPO entered into a written contract whereby Transman would provide temporary workers to SAPO for a two-year period (later extended to five years until 31 March 2005). In terms of clause 3.8.1, SAPO agreed to pay Transman (1) a fee per staff member per hour calculated by reference to the hourly rate of a permanent SAPO employee performing similar tasks, and (2) 'an allowance for benefits as prescribed by the BCEA'. SAPO failed to provide details of permanent employees' hourly rates as required. Transman estimated these rates and invoiced SAPO accordingly. In November 2004, Transman obtained a court order compelling SAPO to deliver remuneration details, which was later set aside by the full court and referred to trial. Transman claimed R34,870,137.36 based on calculations using information eventually furnished by SAPO. Through various pre-trial agreements and an earlier order by Ledwaba J on 24 April 2010, the parties narrowed the remaining issues for trial concerning interpretation of the contract and calculation of amounts owing.

• Whether clause 3.8.1 of the agreement obliged SAPO to pay an allowance for benefits prescribed by the BCEA and, if so, how such allowance should be calculated
• Whether the phrase 'allowance for benefits as prescribed by the BCEA' should be interpreted to include a reasonable allowance where the specific amount was not agreed
• Whether the allowance should include only BCEA benefits or also benefits under National Bargaining Council of the Road Freight Industry (NBCRFI) collective agreements
• Whether clause 5.8.3 limited increases in rates/fees to the consumer price index
• Whether amounts reflected in invoices issued prior to 9 November 2001 had prescribed
• Whether expert evidence established what a reasonable allowance would be

The appeal was dismissed with costs, including costs of two counsel where employed. No amount was found to be owed by SAPO to Transman based on the calculations taking into account the court's findings.

Where a contract provides for payment of an 'allowance' in vague terms without specifying the amount or method of calculation, and the parties have not agreed on what the allowance should be, the contractual provision is not enforceable unless the party claiming the allowance can establish on sufficient evidence what a reasonable allowance would be. Even if a term requiring a reasonable allowance is implied, the claiming party must prove that the amount can be sufficiently certainly fixed on the evidence, including showing it accords with industry norms or some objective standard. Unchallenged expert evidence need not be accepted where it is theoretical, fails to consider actual payments or relevant variables, addresses the wrong question, or the expert concedes that parties would need to agree on the amount. In interpreting contracts, specific clauses excluding liability should prevail over vague clauses creating liability to avoid absurdity or inconsistency.

The court observed that while it accepted (without deciding) that Transman could potentially recover a reasonable allowance for prescribed benefits, this was not a typical case where parties failed to agree on remuneration. The parties had expressly agreed on remuneration in clause 3.8.1 in respect of the hourly fee; the issue was whether the additional 'allowance' component could be enforced. The court noted it was 'by no means clear' that a reasonable allowance must be implied in these circumstances. The court also commented on the proper use of procedural mechanisms, noting that practitioners wishing to have issues decided separately at different hearings should utilize Rule 33(4) to ensure orders are appealable and to avoid potential absolution from the instance if necessary evidence has not been led. The court observed that this was 'a badly-worded and inelegantly drawn agreement' but there was no justification for ignoring specific exclusionary clauses in favor of one vague clause.

This case is significant for several aspects of South African contract law: (1) It confirms that parties to litigation may redefine issues by agreement at pre-trial conferences and will be held to such agreements. (2) It illustrates the principle that vague contractual provisions may be unenforceable, particularly where a party seeks to imply a term of reasonableness but fails to prove what would be reasonable. (3) It demonstrates that unchallenged expert evidence need not be accepted if it is improbable, defective, or addresses the wrong question. (4) It affirms principles of contractual interpretation, particularly that specific clauses excluding liability should prevail over vague clauses creating liability to avoid absurdity or inconsistency. (5) It provides guidance on claims for reasonable remuneration in service contracts, distinguishing cases where parties failed to agree on remuneration from cases where parties agreed on a vague remuneration formula. The case serves as a warning about the dangers of vague contractual drafting and the practical difficulties of proving what constitutes a reasonable amount where no objective standard exists.