Your work prospects will continue to be GOOD because:
The employment growth rate will likely be above average because of ongoing trends--a growing and aging population that requires more health care, governments providing increased services for people with disabilities, and new technologies that create advances in rehabilitative therapy.
Although the retirement rate will likely be below average, the number of retiring workers should contribute to job openings.
The number of job seekers will likely exceed the number of job openings. This will not be significant enough to have an impact on the work prospects.
Preparing for the Competition
You're more likely to find work opportunities in business rather than in government facilities such as hospitals.
You'll need business skills if you want to take part in the growing trend of occupational therapists acting as consultants to business/educational organizations.