Workplaces that encourage practices such as mindfulness, personal well-being, and “bring your pet to work” days are responding to which environmental force?

I think the answer is social force.
Social force in this context refers to company's effort to make their environment more socially comfortable for the employees.
Examples of actions that they do to respond to social force are: margarita weekend, a field trip for employees, birthday party celebration for every worker, etc.