The Person-Environment-Occupational Model was developed in Canada by Occupational Therapists Mary Law, Barbara Cooper, Susan Strong, Debra Stewart, Patricia Rigby and Lori Letts in 1996.

PEO  is a Person-Centered Approach. 

Here are the principles: 

• Each intervention is as unique as the person it is set to serve. 

• Our environment can either nurture or neglect our being, outlook on life, and performance outcomes.

• Meaningful occupations (or things that we do from day-to-day) give us purpose.

• Maintaining a balance of person, environment, and occupation increases our quality of life, throughout every situation across the lifespan.