The form of work that is often appreciated in Silicon Valley corporations may be termed as “martyr capitalism” where employees are expected to be committed to work with everything else being deemed as unnecessary. Under such tenets, employees cannot evaluate their own ROIs as that would be unimportant. However,business research conducted by some academicians from Stanford and the Georgetown School of Business, has confirmed that a good work-life balance leads to creativity at work emanating from those employees. Good managers must encourage their subordinates to actively explore activities outside work so that they are fresh at the workplace. Employees must not work under a cloud of fear.

Source: https://hbr.org/2016/03/a-managers-job-is-making-sure-employees-have-a-life-outside-work