Thank you for contacting our JA team for guidance.
This is likely in violation of the employer's policies and your union agreement. Therefore, I would file a grievance. However, you may want to consult with a local labor attorney to assist you through this process since it appears the union may not be standing up to the employer. If they breach their duty of fair representation, you could sue the union as well as the employer as it sounds you should have gotten the bid.
You may also want to file a complaint with the NLRB for an unfair labor practice. Consulting with an attorney to discuss your options under all of the circumstances would be helpful. The state bar association can provide you with attorney referrals.
Please let me know if you need additional information.
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