Very odd that the union hasn't been able to resolve this. USPS unions are unusually powrful, not just in comparison to other government employee unions but all

Very odd that the union hasn't been able to resolve this. USPS unions are unusually powrful, not just in comparison to other government employee unions but all unions in general. Protecting employees from being harmed and in some cases dying from workplace conditions is a very basic mission of any union. This should be something the union is pushing against nonstop and not just by filing grievance documents or waiting until the next contract negotiations.