Hacer una prueba en un trabajo

Hacer una prueba en un trabajo
 

Cuando te contratan, a veces tienes que hacer una prueba para ver si sirves. Cómo se diría hacer una prueba en un trabajo?

trial period
There's a 90-day trial period before you're eligible to receive benefits.

on contract / contract-to-hire
This job is a contract-to-hire job. If you do well, they'll hire you permanently.
You're on contract with this company. If you work out well, they'll consider permanent placement.

try-before-you-buy
That company always uses the try-before-you-buy work agencies to get its employees.