Once the client and the physical or occupational therapist determine which specific job titles need physical ability testing, the therapist will go on-site to collect data. Typically, those jobs with the most injuries reported are analyzed first.
	Appropriate jobs to analyze may include "routine/frequent" measurable strength requirements, with "routine" referring to the job tasks remaining essentially the same throughout the year, and "frequent" referring to the strength requirements occurring daily or hourly. It may be applicable to analyze a sustained endurance demand requiring frequent whole-body movement under load throughout the day, or an identifiable agility or posture requirement.
	If strength testing seems appropriate, specialized equipment will be taken to the work-site to test individual workers. In some instances, tests of posture tolerance and agility are evaluated as well. If endurance testing seems appropriate, heart rate monitoring of workers will also be conducted.
	As a result of the on-site evaluation, there may be simple modifications that can be discussed with management that would reduce the physical job requirements or accommodate physically-challenged workers. Such discussion would prevent management from setting unreasonable job requirements that would not stand the challenge of litigation under the Americans with Disabilities Act (ADA).
	The evaluating therapist will review all tasks for a specific job class and determine if there are any tasks that do not fit the ADA definition of "essential." The therapist will then determine the easiest and safest way to accomplish the tasks, and recommend changes as necessary.
	Some recommended changes to the methods observed could include job rotation; mechanization; reduced walking, carrying, and stair climbing; or hiring additional workers to reduce overtime and decrease on-the-job injuries.
	The data collected focus on the basic physical demands of the tasks associated with each job, not the skills required to perform those tasks. A job-site assessment is essential in developing valid Post-Offer Screenings.