When an employee of another company caused your burns (and not your own - you cannot sue for injuries caused by a fellow employee), you can hold their employer legally responsible. There is a legal doctrine called respondeat superior. This is Latin for “let the master answer.”
This is exactly as it sounds. The employer is obligated to answer for the employee's acts as long as their employee committed them when they were within the scope of their job.
A worker is an agent of their employer, and what they do on the job is considered the act of their employer. This means that you can file a lawsuit against a company. For your purposes, you will have access to a larger insurance policy. If your injuries exceed the amount of the company’s insurance policy, you can begin to go after their assets. While your damages are the same no matter who is responsible, there is more money to pay for your injuries when you file a claim or lawsuit against a company.