... small amount of value-added). Mid South Business English Lesson – Advanced Level's archive Global Production and the Labour Market 1. The share of trade in world GDP has been increasing ... that is sustainable because of barriers to entry on the top, an abundant supply of labor on the bottom, and the entry of more firms on the level even though many industries already have excess ... attritional 3. To greater gains from trade, countries are seeking to increase their value-added position as they expand their industrialization, but have often found difficulty in upgrading. ...