The rate of output per worker (or group of workers) per unit time is called

Step 1: Analyze the question The question asks for the term describing the rate of output per worker (or group of workers) per unit time. The key phrases are "rate of output", "per worker", and "per unit time". Together they describe how efficiently labour is used.

Step 2: Explain the concept Labour productivity is the amount of output produced by a worker (or a group of workers) in a given period of time.

Labour productivity = Total output ÷ Number of workers (or total labour hours)

For example, if a bakery in Ibadan with 5 workers produces 500 loaves of bread in a day, the labour productivity is 500 ÷ 5 = 100 loaves per worker per day.

Step 3: Evaluate the options

• A. Labour productivity: This matches the definition exactly. It measures output per worker per unit of time.
• B. Total output: This is the entire quantity produced by all factors. It is not expressed per worker or as a rate.
• C. Individual output: This is what a single person produces, but it does not cover groups of workers or the idea of a rate over time.
• D. Work done: This is a physics term (force × distance) and has no place in this economic definition.

Step 4: Answer The correct option is A. labour productivity.

Exam tip: When you see "per worker" or "per unit of labour" in an economics question, think productivity. Also remember that total output is the whole amount produced, while productivity is output relative to the input used. This distinction appears often in JAMB.