Allocate tasks to your employees, and keep track of their progress with the tasks.
Each employee will see a list of tasks allocated to them, and the importance thereof, so that prioritisation of work can be implemented. Each person will also have access to all tasks they allocate to other people, so that they can easily be informed of task status and progress. The task management system effectively eliminates the forgetting of tasks.
The system is especially good if you have employees physically in different locates, and communications to them is paramount.