In which situation will employment policy need change even if total change is zero?

Correct answer: When young workers leave and the elderly population rises

The direct answer is A. A zero change in total population does not mean that the population structure has remained unchanged. Step 1: when young workers leave, the working-age population becomes smaller. Step 2: if older people become a larger share, the age composition changes even if the total number stays constant. Step 3: employers may face labour shortages, while the government may need more health care, social support and retraining policies. Employment policy may therefore need to encourage suitable workers, improve skills or adjust work arrangements. B says all age groups remain unchanged, so it gives no reason for a new policy. C only says that migration does not occur; it does not describe the stated age-structure change. D ignores the likely change in labour supply. Memory cue: a stable total can hide a changing composition.