Companies are increasingly willing to pay for their employees' medical history details, with workplace "wellness programs" growing as large employers try to reduce health care costs.
In exchange for filling out detailed health risk assessment questionnaires, or undergoing biometric screenings, employees are offered cash incentives, or insurance premium savings.
However, not everyone sees it as a fair trade.
"Employees are giving up some aspect of their privacy and their personal health information," Georgetown University Health Policy Institute Assistant Professor Dania Palanker explained to CNBC's "On the Money" recently.
According to the Kaiser Family Foundation, 35 percent of large firms (defined as 200 or more employees) pay an incentive between $150 to $500 for a completed health risk assessment. Another 23 percent of large firms surveyed say they pay between $500 and $1000 for the questionnaire.
Yet Palanker said workers are questioning "whether their privacy is worth the amount of money that is at stake."
She explained that some wellness questionnaires ask about genetic predispositions or pre-existing conditions for you and your family members. Palanker said that disclosing sensitive health information may make some employees "nervous [about] what your employer might do having that information."