The guide that measures the environmental and physical rigors associated with a job is known as PDA. Several companies conduct this investigation as a part of their employment prescreening activities or return work check in for employees who were injured. It is also done sometimes for individuals who have some physical limitations owing to some injury. Often physical injuries reduce the ability of a person to perform any task and it hinders the performance at work place and personal life. The job of this analysis is to identify environmental and physical risk factors or any job mismatches.

Physical Demands Analysis and Job Demands Analysis are nearly the same. PDA measures the environmental and physical factors that are required to be fulfilled by an employer so that his employees can function properly. PDA taken into account tasks like lifting, lowering, carrying, pushing, pulling and the force and frequency required to perform these tasks in investigation. Environmental factors like noise, exposure to heat, etc are taken into consideration too in this form of analysis. Any qualified and health safety professionals administer this method in a company, while the human resource department controls the documentation and compliance with Association of Canadian Ergonomists.

The uses of physical demands analysis and job demands analysis are mainly classified into three things:

• Pre- employment screening- this ensures that new employees with any special needs are place in right position, where they can complete their corporeal task easily. Putting an employee in the right position can help in reduced many injuries that happen at work. This way not only the employee remains fits and happy but can perform much better in every sphere. The sitting posture is very important, if the tools in the workplace do not offer posture friendly sitting then that can lead to corporeal problems among employees. Pre-employment screening stops that.

• Return to work job analysis- this ensures that any previously injured employees can return to their job position while complying with any corporeal restrictions that has been applied or determined by any physician. An employee with injuries and physical problems like back pain, spondylitis, and accident injury need special attention. They need the proper tools and accessories and relax their body while at work. This analysis helps in doing just that for all employees with similar condition.

• Determining PPE Requirements- PPE or Personal Protective Equipment is required in certain jobs. The PDA allows the respective department to check the job requirement and accordingly bring in tools and ergonomically accessories that would help in a better work and production environment.

At work when a person does not sit or do not perform any corporeal task accurately and in the right position, it can lead to physical problem. Sitting is a bad chair can increases the chance of shoulder and back pain by thousands. This can lead to more absenteeism and less production. So PDA and JDA can help employers assess the situation and find beneficial solution from them.