How can employers best protect themselves from vicarious liability?

Making employees and contractors exclusively liable for any compensatory damages

Require employees in high risk jobs to post a monetary bond in case they make mistakes costing their employers money.

Using indemnification clauses, use of clear policies with training and monitoring, and sufficient liability insurance to cover damages

Firing all employees and re$-$hiring them as independent contractors.

Firing employees at the first sign they are not learning the job quick enough.