Training schedule once hired

I actually have an additional question regarding this topic.

I understand that airlines will assist you through the process of actually getting your ATP, but do you have to be beyond the 1500 hour threshold before you start training with them or would you start training just shy of 1500 with the new hire training including enough hours to pass 1500 as you work towards the ATP? For the mentors on here, I’m curious what that transition process looks like and how many hours you actually had at the time of starting new hire training at your first airline job.

Kyle