Construction at Windsor's new downtown family aquatic complex has come to a halt.

Members of the International Union of Elevator Constructors are picketing there.

All other trades working on the project did not report to work in support. They refuse to cross the picket line.

John Morrison is a unionized sheet metal worker who drove from Port Dover this morning. He said he will not cross the picket line.

"We're all brothers in the union so we have to support that," he said. "It was quite the drive this morning to find out that we got to turn around and go home anyway."

Morrison said he'll sacrifice a day's pay and spend the time working on his boat.

There's no word yet on how long the picket will stay in place.

Project manager Don Sadler said a few foreman and supervisors are left on site, preparing it for tomorrow.

"We fully expect to be back in full force tomorrow," Sadler said.

Part of the building must be finished 98 days from now when the International Children's Games begin.

"One day isn't going to detrimentally affect our schedule," Sadler said.

Sadler said as many as six members of the International Union of Elevator Constructors have worked on the aquatic centre to date.