Counter workers need knowledge in the following areas:

• Customer and Personal Service: Providing special services to customers based on their needs.
• Food Production: The methods for planting, growing, and harvesting food.
• Public Safety and Security: How to protect people and property.
• English Language: The meaning and use of the English language.
• Sales and Marketing: The methods for selling products and services.
• Production and Processing: How products are made and distributed.
• Mathematics: The rules and uses of numbers.
• Administration and Management: How to run a business or group.