An EPSS is just one of many possible cost-effective performance improvement interventions. Not all jobs or business processes will benefit from an electronic performance support systems, but some jobs could realize some substantially benefit.
Some jobs consist of many infrequently performed tasks.
The banking industry is a good example of this. The customer representatives in many banks is responsible for handling just about all types of banking transactions, such as deposits, withdraws, new accounts, transfers etc. Your bank's customer service representatives can generally deal with deposits and withdrawals very quickly and with relatively few errors. However, it often takes considerably more time to process an unusual or infrequent transaction, such as transferring an account to another bank. The teller may need to consult with a supervisor or to find some information in a procedure manual.