Is a Statement of Worker about His or Her Own Condition valid evidence?

Policy item #97.32 (Statement of Worker about His or Her Own Condition) provides that a worker’s statement about his or her own condition is evidence insofar as it relates to matters which are within the worker’s knowledge. It is clear a worker may speak to his own symptom experience. The standard for evaluating the credibility and reliability of such evidence was established in the case of Faryna v. Chorny[1]: …the real test of the truth of the story of a witness … must be its harmony with the preponderance of the probabilities which a practical and informed person would readily recognize as reasonable in that place and in those conditions.