What is the amount that osha can impose as a penalty on an employer for committing a willful violation

The answer for this question is: $126,749 per violation

The ground for this huge amount is by wilful violate the rules, the employer basically putting his/her employee's life in danger on purpose, so the punishment for this should be a lot higher.

This amount is exactly ten times the amount of penalty imposed to the employer who commits willful violation ($ 12,675)