Stuart Patrick, chief executive of the Glasgow Chamber of Commerce, is backing calls for a relaxation of parking charges after 5pm.
Since Monday, the city's biggest retailers have stayed open until 7pm on weeknights, in an attempt to boost business.
The call comes just a day after we revealed motorists in Glasgow paid out £8.7 million in onstreet parking charges during the last financial year.
Mr Patrick, said: "We have been in fruitful negotiations with the council in order to make headway on the issue of free parking in the city centre after 5pm and will continue to do so.
"The Chamber of Commerce is keen to encourage - and work with - all parties on this issue.
"Incentives such as these are crucial in terms of boosting customer footfall in the city centre."
Retail chiefs say the later closing time is the first step in their campaign to try and keep shoppers on the streets until 9pm, to compete with other European cities.
A Council spokesman said: "The range of parking controls in use, and the facilities we invest in, are in line with our Local Transport Strategy.
"This not only seeks to support greater use of public transport but is also realistic about current car use and supporting businesses.
"But the city centre is also a destination point in itself, providing a fantastic backdrop for entertainment and sightseeing.
"To attract people into the city bays are available for short term parking to those who require access to specific locations and the tariff is set to allow this.
"Car parks are available for longer stays or for those not using public transport."
Glasgow is the second biggest retail destination in the UK after London, with more than 1500 shops, 38,000 employees and it is worth £2.4 billion a year, according to research.
As reported in the Evening Times in May, retail chiefs hope later opening hours will transform Glasgow's shopping culture.
Paul Mitchell, chairman of the City Centre Retail Association, is among shop bosses hoping stores would open until 9pm by next summer.
He said: "It will help us capitalise on the volume of people expected in the city for the Commonwealth Games."