About On Site Therapy


Our Approach

On Site Therapy® LLC is pioneering the method for enhancing human performance at work. The genesis of Ergonomics & Fatigue Management Solutions is founded on years of clinical experience within the fields of occupational ergonomics, lymphatic therapy and work analysis.

Whether considering a need to maximize work performance, reduce workplace musculoskeletal injuries, or establish ergonomic improvements in production & efficiency, you must first have methods to address the physiological impact of time AND fatigue.

OST™ Occupational Compression Wear

Designed by Charles Letchworth, Occupational Therapist  Certified Lymphatic Therapist  and Robert Lisson, Occupational Therapist and expert in the field of Work Analysis and Ergonomics, On Site Therapy® Occupational Compression Wear is designed  to address the physical and physiological demands encountered at work .

Our OST™ Power Arm Sleeves were designed to specifically address repetitive upper extremity demands and constructed with our proprietary gradient compression level of 13-18 mmHg. This Occupational Compression Wear provides a worker full day comfort, joint support, and aides in the return venous blood and lymphatic fluid from the muscles being repeatedly contracted. Simultaneously arterial perfusion of oxygenated blood is supplied to the muscles aiding both endurance and recovery.

OST™ Performance Socks are optimal for the work environment due to the demands of prolonged standing. Per OSHA these workplace hazards reduce blood flow to the legs, force isolated muscles to work for an extended time, and increases the risk of fatigue and varicose veins. As the hydro-static pressure in the lower leg increases,  OST™ Performance Sock compression level of 15-20 mmHg is ideal for aiding the venous and lymphatic return. The physiological benefits of using compression socks has widely been proven and demonstrated preference over anti-fatigue mats.

Our occupational compression garments may:

  • Improve muscle efficiency & endurance
  • Reduce fatigue
  • Increase productivity
  • Decrease risk of both workplace & sports injuries
Each of our compression products are uniquely designed & fitted to benefit the designated muscles and body regions at risk of fatigue and injury. The benefits of this site-specific compression strategy used by many athletes can now be provided to you, or your workforce by experienced healthcare professionals.


Our proprietary Occupational Programs offers the ability to properly introduce the use of compression products in today’s workplace. On Site Therapy can work with an employer’s existing on site safety, health, and injury prevention professionals as well as with any third-party on site service providers.



Download Our Special Report

According to a study in the International Journal of Occupational Safety and Ergonomics, evidence of Chronic Venous Insufficiency (CVI) was found in 59.4% of individuals working in a sitting posture and in 83.4% of those working in a standing posture. That is an enormous number of people exposed to a fairly preventable workplace hazard!

Founded by a Certified Lymphedema Therapist (CLT) and a leader in the field of work analysis / injury prevention, On Site Therapy delivers the industry’s top compression and orthotic products for both the Sports & Industrial Athlete. Networking with other healthcare providers we are able to implement our Ergonomic & Fatigue Management Solutions to employers across the United States.

Read Special Report

Mission Statement

Providing solutions to manage muscle fatigue.
Our mission is to create and provide advanced solutions to support and manage muscle fatigue caused by the repetitive motions individuals perform daily at work and play.

Vision Statement:

On Site Therapy’s vision is to provide Compression Wear & Ergonomic Solutions for all for them to feel better at work and home by managing their muscle fatigue and comfort in the workplace because of our Compression Wear. Founded by Occupational Therapists, On Site Therapy seeks to honor God by affecting the lives of our clients, our employees, and the communities in which we work and live.

Core Values:

We are a company founded in Christian values of integrity, respect, kindness, humility, and a sense of community responsibility. We strive to create eternal value by honoring Jesus in all we do, this is reflected in how we conduct our business. We trust that God owns this business and we are merely His stewards of it. We want to make sure that all we do in and through the business honors Him. For the same reason, we do not want to do anything that will dishonor Him.

Whatever you do in word or deed, do all in the name of the Lord Jesus, giving thanks to God the Father through Him.-Colossians 3: 17