Yup. RLA rules apply, common-law applies, and do not require a union. I love all you quasi-lawyers and quasi labor-law experts who somehow were led to believe (and fell for it) that you're not an adult and cannot do anything for yourself without a union.

There are plenty of problems at SKW, but the nature of the contract is not one of them. Enforcement is problematic and would require a lawsuit (which SAPA itself probably can't file). That means the company doesn't commit massive wholesale violations because that would probably get enough folks motivated enough to file suit, but they can do small-scale violations which would not be worth a lawsuit (at a union shop these would be grievances).