ICE Level 1 Jobs that involve a range of tasks, most of which fall into a set pattern and do not change.
ICE Level 2 Jobs that involve a range of varied activities, in a variety of contexts. Some of the activities will be complex, and the person will have some individual responsibility or autonomy. The job may also involve collaboration with others, perhaps through membership of a work group or team.
ICE Level 3 Jobs that involve a broad range of activities in a variety of contexts, most of which are complex and non-routine. The person will usually be working with considerable responsibility and autonomy, and may have control or guidance of others.
ICE Level 4 Jobs that involve a broad range of complex, technical or professional work activities. The person will be required to perform the tasks in a wide variety of contexts and with a substantial degree of personal responsibility and autonomy. The person will often be responsible for the work of others and for allocating resources.