I recently signed a post grad position starting in September (9 months away). The offer is fairly laxed, it doesn't have a set start date except (August 2017) as they are still finalizing details of the development program.
I am currently thinking of job hunting elsewhere to see how other companies are as well. Is this an option for me in Canada? Since I have accepted their offer does this mean that I am employed by them already or can I just change my mind and withdraw my acceptance with no serious repercussions?