How did the 1978 voluntary family-size program differ from the one-child policy?

The 1978 voluntary program and the subsequent one-child policy differed primarily in their scope, strictness, and enforcement mechanisms.

• Family Size Limits: The 1978 program was voluntary and encouraged families to have no more than two children, though it noted that one child was preferable. In contrast, the one-child policy, which became the official nationwide standard in 1980, mandated that the great majority of families be limited to only one child.123
• Enforcement: While the 1978 program relied on encouragement, the one-child policy was a formal government mandate. Enforcement of the one-child policy included financial incentives and employment perks for compliance, as well as severe sanctions for violations, including forced abortions and sterilizations.123
• Standardization: The 1979 transition toward a one-child limit was initially applied unevenly across different provinces. The 1980 policy sought to standardize this requirement nationwide, moving away from the earlier, more flexible voluntary approach.12

While the government’s goal in both instances was to curb rapid population growth, the shift to the one-child policy represented a move toward rigid, state-controlled family planning that fundamentally altered Chinese society.31