What could be a tool to minimize the downside risk of hiring someone with the following expected productivity:$-$

Productivity: $$200,000$ with Probability $80\%$

Productivity: $(-)$$$100,000$ with probability $20\%$

Minimum required productivity is $ $160,000$ per year.

Have probation period to allow candidate to prove performance

Only hire candidates with guaranteed performance

Give candidates who fail probation another chance

None of the above