Climate change is a huge workers’ rights issue. https://www.washingtonpost.com/business/2023/07/14/heat-workers-osha-protections/
Forcing people to work in deadly heat is mostly legal in the U.S.

As the planet records some of its highest average temperatures, workers have barely any legal protections from extreme heat.

The Washington Post
Postal workers are dying from the extreme heat. Just like the pandemic, climate change disproportionally impacts essential workers.
https://www.usatoday.com/story/news/nation/2023/06/22/dallas-usps-worker-dies-heat/70345359007/
Texas postal worker collapses, dies amid extreme heat index over 110

A postal worker in Texas collapsed and died Tuesday while on his route in Dallas amid extreme heat in the area.

USA TODAY
@luckytran anything management can blame on the carriers, they will and do. Even if they die. Carriers aren't treated well. Not at all. Speaking as someone who happens to know a few carriers. And they can't say anything about the post office publicly for fear of repercussions and some contract bullshittery.