What are some solutions using technologies for workplace learning, if Informal learning lead employees to waste time if they get the freedom to

What are some solutions using technologies for workplace learning, if Informal learning lead employees to waste time if they get the freedom to socialize or surf the internet for learning purposes, and they will lose track of their learning objectives and waste time on unproductive worthless medium? What are some ways to prevent employees from wasting time and use technology to increase employee learning?