Rep. Morrison has introduced HB 1085 which would prohibit employers from requiring an employee to implant, inject, or ingest a device into their body as a condition of employment. The employee would be eligible for attorney’s fees and damages in the case of a violation.
A quick Google search suggests that this is maybe somewhere above dystopian speculation and but below common problem. For example, a 2015 article from the BBC talks about a Swedish company that required microchips be planted in the palms of employee’s hands to access the business facilities. A 2017 article in the New York Times talks about a Wisconsin with a voluntary program where employee’s can get a chip in their finger that allows them to, for example, open doors and pay for meals in the cafeteria. That article suggests some of the potential abuses that could come later, e.g. to track the length of employees’ bathroom or lunch breaks.