On the flip side, the employer signed the same agreement as the union/employees. If the company valued weekend up-time, they could have negotiated a higher wee

On the flip side, the employer signed the same agreement as the union/employees. If the company valued weekend up-time, they could have negotiated a higher weekend rate to get a union guy in to fix the problem. The company prioritized low labor costs over uptime, so they're at least 50% to blame here.