To be clear, a company is of course not responsible for the personal fitness of its employees. That will always be a personal choice of the individual. But because there is a common interest behind it, the company can create an environment and a business climate where sports - and by extension, exercise and healthy behavior in general - are made easily accessible, encouraged and why not, also rewarded.
In this way, a company can even become the main pacesetter that can encourage employees to exercise in particular and healthy behavior in general .