I was wondering if there are still job opportunities available for second semester of this school year.
I know you have to go Oscarplus but where do you exactly go from there?

Apply for jobs on oscar plus, ask around place to place, look for adverts that certain departments are hiring, talk to profs, ... ???

Titles does hiring for preparing for the September rush, places like hospitality services (food) are always hiring, pretty sure The Sil is always looking for writers and submissions, AVTek (tech) hires in the summer/november and year-round, most of the coordinator positions for the various services are hired over the summer and sometimes winter, and... that's all I can think of.

you go on oscarplus and sign in as a student. then you go to WORKSTUDY and search on there and available jobs will come up! another place that offers employment opportunities is on the MSU website where they have a section titled "job" that get updated very often. both are good places to start

MSU is always hiring (usually), have a look.

https://www.msumcmaster.ca/jobs

How do you get an on -campus job during the summer if you are not eligible for the workstudy program? Do you need to apply through a different area on Oscarplus?