TORONTO - A coalition of environmentalists, retailers and taxpayer advocates has formed to fight Toronto's upcoming ban on plastic bags.

The alliance of 15 organizations launched a campaign at city hall on Monday to inform the public about the ban's shortcomings.

Spokesman Kevin Gaudet says eliminating plastic bags will cause job losses in the plastic manufacturing industry, including family-owned small businesses.

The coalition says the ban won't reduce pollution, as some supporters have argued.

The group says consumers will start using more paper bags, which don't recycle well and consume three times the energy to produce.

The ban, which council narrowly voted in favour of last June, is set to go into effect on Jan. 1.