Companies that specialises in complex clean ups will most certainly have all sorts of regulations and procedures employees need to follow before, during and after performing a job. Assess the risk and determine how to perform the task in the safest manner possible by following the appropriate standards.

Do all companies follow these steps, no. Can they be held accountable for neglecting safety, yes. Being exposed to hazard materials like asbestos is gross negligence. Knowing that such a company exists doesn't means it's normal or common practice.