Shift Work And LED Lights

Shift work. It’s a given in virtually every work schedule of the process-based industry. 

LED (light-emitting diode) lighting has gained traction as the status quo due to its energy efficiency and longevity.  However, the specific characteristics of LED lighting, particularly its color temperature and blue light content, can affect the circadian rhythm and sleep patterns of shift workers.  Blue spectrum lighting, particularly the one emitted by electronic devices (computer screens) and energy-efficient light sources, can have several negative effects on shift workers.

Disruption of Circadian Rhythm:

Exposure to blue light during nighttime hours can suppress the production of melatonin, a hormone that regulates our sleep/wake cycles. Shift workers who are exposed to blue spectrum lighting during their night shifts may experience difficulties falling asleep during the day, leading to sleep deprivation and subsequent health issues.  Some studies even suggest that exposure to blue light at night can also lead to heart disease and diabetes.

Increased Risk of Fatigue and Alertness Issues:

Insufficient and poor-quality sleep resulting from exposure to blue spectrum lighting can lead to increased fatigue levels and reduced situation awareness during shift work.

Eye Strain and Visual Discomfort:

Blue spectrum lighting, particularly from screens and energy-efficient LED lights, can cause eye strain, dryness, and visual discomfort. Shift workers who are regularly exposed to such lighting sources for extended periods may experience symptoms like headaches, blurred vision, and eye fatigue, affecting their comfort and performance on the job.

 

To mitigate these negative effects, certain strategies can be implemented.  There are new LED lighting solutions that automatically filter out the blue light during nighttime shifts.  Blue light-blocking glasses is an inexpensive and effective solution as well.  In addition, some computer operating systems provide a ‘Night Light’ setting that adjusts the screen to display warmer colors.

LED lighting and other sources rich in blue spectrum light are here to stay.  All these solutions should be promoted within your Fatigue Mitigation Risk Plan (RP750), if you don’t have one yet contact UCDS Inc. for a quick turnaround solution that fully meets Regulators expectations.

 

By Chris Heil