With the advent of cost-effective GPS devices and smartphone tracking apps, employers may effectively monitor their workforce like never before. An employee’s distance traveled, sales routes, and productivity (among other things) can now be verified in real time, which is a seductive thought to most employers, to say the least. But there are things to consider before using tracking technologies to monitor employees, such as constitutional rights of privacy, state criminal statutes, union and labor issues, and good old-fashioned tort claims. In this article, we’ll review some legal considerations and provide some tips for navigating the evolving legal landscape of GPS tracking.