Implanted Chips for Employees: Violation of Privacy Rights or New Era in GPS Tracking

Another benefit is that businesses may be able to equip their chips with GPS technology to monitor their workers’ location and activities.

No, they aren't able to do that. Implanted chips are basically RFID tags. GPS needs a good amount of power and no one wants to replace the batteries of their implanted chip. In addition for GPS monitoring there would be a sender necessary, which needs power too and an antenna.

Having to carry payment cards and access cards can be cumbersome

We've reached Idiocracy, folks. Carrying a keycard is too difficult!