Brock University provides great opportunities for graduate students to volunteer or work. The following link to Career Services will direct you to search engines with job postings that are updated regularly. Remember to check within your department, as well, for possible work. Note: The official position of the university is that full-time graduate students can not work more than 10 hours per week, in addition to leading seminars and labs.
University Affairs - is a very useful resource for graduate students looking for academic career advice and higher Ed job posts. The Association of Universities and Colleges of Canada (AUCC) publishes University Affairs, which is both a monthly magazine and an online resource for the academic community that contains job listings, news, feature articles and career development information that would be of great interest to grad students. Visitors can sign up to get personalized job alerts or a new web content newsletter delivered right to their email inbox.
BioTalent Canada - a non-profit national organization that helps Canada's bio-economy industry thrive globally. BioTalent Canada anticipates needs and creates new opportunities, delivering human resources tools, information and skills development to ensure the industry has access to job-ready people.