Lewis committed a number of company policy violations during his probationary period. assume that he could prove that only one of those violations actually occurred. would the appellate court have still supported the trial court's summary judgment in favor of his employer?

Yes the appellate court have still supported the trail court's summary judgement in favor of his employer.

Explanation:

Lewis has committed many violations of the company policies in his probation period. He is on contract for a specific period of time and is not still permanent, so the level of care should be high during this period of probation, as his one conduct of violation of company's policies may result in the termination of his contract.

But when his matter was taken in the court, he was able to prove that he didn't commit many violations, rather he committed only one policy violation. So the Appellate court would most probably support the trial court judgement, which says that if he committed even only one violation, the company has the right to terminate his contract.

If he can violate one policy during his probation, when he is not even permanent, he can even continue to do so after become the permanent employee of the company, which in any case cannot be tolerated by the company.