Short term gain...
Oh, you want to unionize and then demand higher wages. No problem. The cost of labor has now increased to the point where robotics makes more sense financially. We now need 150 unionized employees to do what 1500 did previously.
Right, in 2018 the county spent $3.3M on road work and pay incentives to Amazon, including giving part of the city's occupational tax collected from employees to the company. They capped permit & business license fees for Amazon too. And there were "undisclosed incentives" involved.
Congratulations to the new Union! You just incentivized Amazon to automate the jobs out of existence. Guess the politicians will need to answer to the voters now.