Aristocrat Leisure, a company that makes poker machines, is to let chief executive Paul Oneile leave.

The 59-year-old's contract runs out at the end of the year and he has decided not to renew it, reports the Sydney partypokerMorning Herald.

It is apparently feasible that Mr Onelie may cut ties with the gaming firm even sooner than that, with company chairman David Simpson claiming the company would see how things turn out in the coming months.

"He will work well with us, but once you have decided that you are going to leave somewhere and you get toward the end of that period you are sort of concentrating on what you are going to do next," the chairman explained.

The chief executive has been with Aristocrat for five years and is the sixth person to hold that role in the 12 years since the company was floated.

As well as gaming machines, the firm manufactures pool and snooker tables, and other games room furniture.