Forest or the Trees Dept. Hmm ... We could go into discussions about substantial similarity, the abstractions test, and trademark infringement (and we could review a previous post on this subject). But it really comes down to whether the folks that own the Indiana Jones trademarks and copyrights feel that your insurance company is channeling its brand.
If You Build it, They Will Sue. Possibly, Lucasfilm's legal team may not care -- for example, if it's a one-shot promo film, the similarities are primarily generic (typical pulp adventure hero stuff) and your film has limited exposure (just shown at a company getaway). But if it smells like you're emulating the franchise for a deep-pocketed client, then you and the insurance company will be dragged into a dispute. Our suggestion would be that if the Indiana Jones motif was the insurance company's idea, seek an indemnity provision in your contract. If it was your idea, either ditch it, or check your contract to make sure that you are not indemnifying the insurance company.