Yes, I strongly agree that the issue of child labour raises questions about and beyond the informal sector. While child labour is predominantly visible and prevalent in the informal sector, its roots and ramifications extend deeply into the formal economy and broader societal structures.

Firstly, the informal sector is indeed a major employer of child labour. Children are often found in agriculture, small-scale manufacturing, domestic work, street vending, and rag-picking, where regulations are lax, wages are low, and exploitation is rampant. The lack of formal contracts, social security, and oversight makes children in these sectors highly vulnerable to abuse, long working hours, and hazardous conditions. This directly questions the effectiveness of labour laws and enforcement mechanisms in protecting vulnerable populations.

However, the issue extends beyond the informal sector in several critical ways:

1. Supply Chains of the Formal Sector: Many products manufactured in the informal sector, often using child labour, eventually feed into the supply chains of larger, formal businesses, including multinational corporations. For instance, raw materials or components produced by child labourers might be used in products sold by reputable brands. This raises ethical questions about corporate social responsibility, due diligence in supply chain management, and consumer complicity.

2. Poverty and Economic Disparity: Child labour is fundamentally a symptom of extreme poverty and economic inequality. Families, particularly in rural and marginalized communities, are often forced to send their children to work to supplement meager household incomes, ensuring survival. This points to systemic failures in poverty alleviation programs, lack of adequate social safety nets, and unequal distribution of resources, which are issues that transcend the informal/formal sector divide.

3. Lack of Access to Education: The absence of accessible, affordable, and quality education is a major driver of child labour. When schools are distant, expensive, or offer poor quality education, parents may see little value in sending their children, opting instead for immediate economic contribution. This highlights failures in public education systems and the state's responsibility to ensure every child's right to education.

4. Social Norms and Cultural Practices: In some communities, traditional norms or cultural practices may normalize child work, especially for girls, who might be engaged in domestic chores or caregiving. This reflects deeply ingrained patriarchal attitudes and societal expectations that undervalue education for certain groups of children.

5. State and Governance Failures: The persistence of child labour, even with existing laws, indicates failures in governance, law enforcement, and the political will to address the issue comprehensively. This includes corruption, inadequate inspection mechanisms, and a lack of rehabilitation programs for child labourers.

In conclusion, while the informal sector is the immediate site of much child labour, the phenomenon is a complex web of economic, social, cultural, and governance failures that implicate both formal and informal economies, as well as broader societal values and state responsibilities. Addressing it requires a holistic approach that tackles poverty, ensures universal education, strengthens legal frameworks, and promotes ethical consumption and production practices across all sectors.