An inquest into the April 6 shooting at Ottawa-Carleton Transpo concluded Tuesday. Now the jury must review evidence and make recommendations, hoping to prevent a similar tragedy.

Coroner's lawyer Al O'Marra urged jurors not only to recommend OC Transpo develop an anti-harassment policy, but propose federal and provincial governments mandate harassment policies in all workplaces.

Last spring, Pierre Lebrun, a former employee, shot and killed four OC Transpo workers. Lebrun then killed himself.

The workplace environment at the Ottawa bus company was the focus of the inquest. Lebrun often complained he was teased at work for his stuttering. But the inquest found that no one at OC Transpo investigated his complaints.

An employment equity manager called it a "poisoned" environment, a place where people didn't understand human rights or know when management was being too aggressive.

Kathleen Davidson's dad was one of the workers killed. He was working at his computer.

For the past six weeks, Davidson and her mother have attended the inquest, trying to find out what drove Lebrun to kill, why he blamed OC Transpo for his problems, and why he chose to shoot the men he did.

She said it was a tough process, but necessary.

"I'm sure the jury can bring back recommendations that will ensure a lot of people don't have to go through this tragedy again and it will hopefully make Ottawa and other Canadian cities aware of workplace violence," Davidson said.

The jurors have been instructed to suggest practical and reasonable solutions that can be implemented quickly.

Al Loney, OC Transpo's chair, is ready to accept their recommendations.

"I pledge the commission's support for getting on with the job, moving more aggressively, to take the steps that need to be taken," Loney said.