The benefits of automation extend far beyond the reduction of manual work; it can also help make for a safer working environment that protects workers’ health long-term. Take manual palletizing, for example, workers typically tend to bend, lift and twist for hours on end which can cause long-term musculoskeletal disorders including back, neck and upper limb injuries.
This is a central motivation for automating at Volvo Cars, where cobots are used for in-plant logistics and in pre-assembly stations. Here human workers would sequence parts needed on the main line, e.g., brake discs and calipers, and put them into boxes, which is then transported to the assembly line. These parts are quite heavy, the job definitely takes a toll on the body. However, even if the parts are not heavy the high repetition and awkward body postures will still cause musculoskeletal disorders and personal suffering.
“These kinds of tasks are demanding ergonomically. Parts can get tangled, and some are not very easy to grasp. They weigh approximately 500g, up to one kilo, sometimes two kilos, but during a whole week, it easily becomes more than 20,000 kilos per worker. And that's not sustainable,” says Dan Lämkull.
But automating these tasks will pay off. “I don’t have hard data, but I know that within the areas where we have automated, sick leave and the injurious level have definitely decreased. There is a clear correlation between higher automation and less sick leave due to musculoskeletal disorders. The injuries disappear because we have automated,” says Dan Lämkull, stressing that safety in the automotive industry isn’t just about the drivers and passengers. “We have a safety culture in the company. Everything we are doing is basically about safety.”
Minimizing or removing this kind of strenuous activity that can lead to serious health consequences is also key in retaining tenured workers who have often had the same job type for many years. Adjusting the work environment to address age-related physical requirements can help all manufacturers create a more supportive atmosphere and amplify the input of senior workers.