The organization leadership must understand the risks and costs as well as the estimated ROI for providing remote or mobile access. Technology evolution has changed the access platform from a terminal, to a variety of devices with varying capabilities and screen sizes.
Company issued laptops are a common solution to remote access, but limit the ability of employees to "work from anywhere." End users want to access their files from anywhere, anytime, from any device. This is becoming more possible, but brings added complexity and risk. The organization needs a documented policy on what is permitted, and the user's responsibilities. A "Remote/Mobile User Agreement" is usual, signed by the user and kept with the employee's HR records.
Most organizations also require an "App" for personal smartphones connecting to the corporate network. The App will create a sandbox on the smartphone where all corporate documents are stored. If the employee leaves the company, the sandbox is removed, removing all corporate information from the user's device.