There is a study that seem to show that designing a great onboarding experience can make a big difference down the road. In the book "Culture Code" one study is

There is a study that seem to show that designing a great onboarding experience can make a big difference down the road. In the book "Culture Code" one study is ascribed: "A group of new trainees got an additional hour of on-boarding focused not on the company but on the employee. They were asked questions like: What is unique about you that leads to your happiest times and best performances at work? They were asked to imagine they were lost at sea and to consider what special skills they might bring to the situation. At the end, they were given a sweatshirt with their name. Trainees in the latter group were much more likely to stay longer in he company than trainees that went through normal on-boarding" https://hbr.org/2015/11/the-powerful-way-onboarding-can-encourage-authenticity https://hbr.org/2015/11/the-powerful-way-onboarding-can-enco...