Waikato Hospital paid the Chiefs rugby franchise $50,000 after a contract was signed by an executive member who did not have the authority to sign it.
Former hospital media director turned Waikato District Health Board elected member Mary Anne Gill signed the contract with the rugby franchise in 2013.
But it has been confirmed by Waikato DHB executive director public and organisational affairs Lydia Aydon that Gill did not have delegated authority to approve the contract.
The contract, which Aydon said was for two years at $100,000 per year, was cancelled.
"We didn't pay a penalty but we did pay the first two installments (a total of $50,000 excl GST) that covered some of the activities that were planned in the contract," Aydon said.