People treated them as if they had injured themselves on purpose or were otherwise filing a fraudulent claim. Employers gave them little or no information to help them. They felt they had been unfairly blamed and ostracized at a time when they needed understanding and compassion. They were afraid they might be fired for filing a claim. They believed future employers would discriminate against them in hiring.
Employers can learn about any injury that went to an appeals board.
It's public information. Sadness due to uncaring treatment by their employers. Humiliation due to condescending treatment. Despair caused by an inability to work or to find work. The working group has not been formed, and the materials aren't ready.