Malaysia's ATA IMS Bhd said on Monday that findings of forced labour allegations in a recent labour audit by its biggest customer Dyson were not conclusive, and that the impact of Dyson's contract termination would be significant.

High-tech home appliance maker Dyson told Reuters last week it was ending its contract with ATA, which derives 80 percent of its revenue from the firm, after an audit of the company's labour practices and allegations by a whistleblower.

Dyson did not disclose the audit findings but ATA...