Horse Breakers are responsible for educating young horses in the fundamentals required for them to begin training. The breaker will familiarise them with wearing bridles, being under a saddle, having a rider on their back and walking through barriers.
Horse Breakers are generally self employed - an advanced level of horsemanship is required to handle young inexperienced horses. Most breakers would have experience working as a stablehand or higher prior to moving into this field.