One of the major considerations for the aging workforce is the lower capacity for sustained activity. When the limits are reached fatigue sets in and productivity decreases and errors increase.
As such, the ergonomist must use ergonomic principles to design or re-design tasks to decrease the risk of fatigue. To help the ergonomist determine whether the older worker may be at risk, the following measurements should be included in the analysis of performance:
- Heart Rate (above 100 BPM indicates aerobic level of function).
2. Blood Pressure (139/89 is the maximum reading for pre-hypertensive cases. If a worker reaches this level they should be referred to their physician).
3. Individual perceptions of stress. This third metric can be ascertained using such tools as the BORG Scale of perceived patient exertion. A chart is placed in front of the worker while doing a physical task and they rate their perception of exertion. Values of 7-9 reflect light work, 13-17 is hard work and anything above 18 is considered maximum exercise capacity. Readings in the 14-16 reach correlated with the anaerobic threshold.Click Link to Access Free PDF Download
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By determining these values on selected physically demanding tasks, a better level of function without over stressing the worker can be reached and recommended.
It is interesting to note that according to a survey conducted by the National Council on Compensation Insurance, younger workers actually have a higher incident rate of workplace injury on average than older workers. Older workers do have a higher cost per claim, but this is multi-factorial and include issues such as higher average wages, claim duration, and the number of medical treatments. The research by the NCCI show that age is becoming less of a difference. AARP also published a study in 2007 which revealed that expert knowledge of our older workers can offset the impact of old age in some occupations.
As our country faces workforce challenges our older workers should be considered for their expertise, knowledge and experience. Hosting an older workforce requires consideration of the physical limitations as an offset for what they are able to bring to the table. By evaluating the ergonomic aspect of the position, one can reduce the risk of workplace fatigue and maintain productivity.
If you do not have training in taking these types of measurements, you must defer to a medical professional.
Author Victoria Powell is the President of VP Medical Consulting, LLC located in Central Arkansas. VP Medical Consulting is a nurse consulting firm providing services to employers, insurance companies, attorneys and the general public. Services include case management, life care planning, legal nurse consulting, ergonomics and patient advocacy. Ms. Powell holds specialty certifications in a variety of nursing specialties. She can be reached through the web at http://www.vp-medical.com
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