Continued growth of tourism in Singapore will have both positive and negative impacts on the environment and economy. Positively, funding from tourism supports conservation efforts of natural and historic sites. However, overcrowding of tourists can damage the environment through littering and pollution, and disrupt locals. Economically, tourism provides many employment opportunities and income sources for individuals and the country. Tourism receipts and foreign investment in hotels and infrastructure contribute significantly to Singapore's economy and capital inflow. While seasonal unemployment is minimal, congestion in tourist areas can occur. Overall the benefits of tourism for Singapore outweigh the negatives when managed sustainably.