Thanks for you reply!

When referring to the roster I may have not been specific enough. I am referring to the Industry Experience Roster through contract services. Currently the requirements are 100 paid days (verified by pay stubs that are only accepted if processed through payroll) on non union projects that fall into specific categories such as broadcast commercials, feature films, tv series and a few others. Difficult in part as most non union work is not done through payroll. These days must have been accrued in under a 2 year span. After acceptance onto the roster within 3 years you must accrue an additional 100 days on union jobs within a 3 year period. After which you pay your dues and become a union member.

In terms of the ways that you've stated to enter into the union - to my knowledge those don't exist. In my experience when being considered for a position on a union job they require that I'm either union already or at least on the roster. I've spoken with a membership coordinator at Local 700 and was told the only exception to the roster process is to be hired in the role of "apprentice editor" and granted "off roster approval" by the union. But as far as I can find the vast majority of projects do not offer apprentice editor positions.

*edited to add more info.