Every year each department/programme hires a number of casual staff to assist with tutorials, labs etc in the various disciplines.  As a permanent academic staff member it would be of great assistance if you could also advise these casuals when they start that there is a union available to them who can assist if needed in employment matters.  We have been fortunate to be able to attend an induction day for tutors this year and talk to a group of tutors about to start, but if the message was further emphasized by the academic staff they work alongside it would be appreciated.