However, some of the firms promoting AI tools argue that conversely computer systems will make more impartial decisions than humans alone.
Mary Towers, an employment rights policy officer at the TUC, told the BBC its research had found AI tools used in a variety of industries "at the recruitment stage in things like CV sifting, but then beyond that in team allocation, allocation of work, disciplinary measures, right through to termination of employment".
"We found evidence of AI powered tools being used in all the different ways in which you would expect a human manager to carry out functions at work," she said.