I applied through a recruiter. I interviewed at NOVA Chemicals (Sarnia, ON) in Apr 2013
Interview
Applied by email, was contacted by HR to setup personal interview on site. Interview was very relaxed, was done by the process HR lady, 2 guy representing the one site, and another guy from a different site. They each asked about 2 or 3 questions each, which were mostly behavioral based questions. As far as I know this is the only step in their hiring routine.