Western Australia's commerce minister says he is open to the possibility of further extending Sunday shopping hours, but has not made any firm decision on the matter.
A media report claims shops could soon trade from 9am on Sundays under a plan being considered by the WA government.
Currently shops can trade from 11am to 5pm on Sundays.
However, a spokeswoman for Commerce Minister Michael Mischin told AAP the idea was being considered but nothing was final.
Mr Mischin told The Sunday Times newspaper he was looking to introduce some "incremental" changes to Sunday trading laws as early as next year.
"I'm not looking at radical reform, but if there are ways of facilitating commerce and people's ability to purchase goods that they need from time to time then I am prepared to entertain that," he said.
"So far as extending the hours on Sundays, it's one of a number of options that, of course, I will consider."
The Sunday trading laws introduced in August last year have been touted as a success for the state government.
Chamber of Commerce and Industry chief executive James Pearson told AAP he hoped a formal announcement about a further extension of shopping hours would be made next week, coinciding with the first anniversary of the Sunday trading changes.
"Sunday has become the second biggest shopping day of the week," he said.
"It has given retailers a leg up in the competition with online retail."
But Unions WA secretary Meredith Hammat said further trading hours extensions would rob retail workers of family time.
"If Sunday trading is compounded by a reduction in penalty pay, workers in retail and hospitality will have to work after-hours more often and work longer to earn the same pay," she said.