I am the HR MANAGER for the distribution center with a nationally recognized retail chain.

I am the HR MANAGER for the distribution center with a nationally recognized retail chain. I need to write a business proposal for my director to show the benefits of implementing a employee incentive program. This writing is to offer the benefit of offering internal candidates with gift cards after working so many days. In your own words, How could offering the gift cards play a part in employee retention? How can this be formatted into a business proposal.