Written by Jamie JemmesonJapan's Nikkei average fell 0.6 per cent in trading this morning (June 29th) as the yen climbed to a seven-week high against the dollar.Traders anticipate the index will see further declines in the coming weeks, while chart analysis suggests the benchmark is in line for its worst quarterly performance since the collapse of Lehman Brothers.Noritsugu Hirakawa, a strategist at Okasan Securities, told Reuters: "The current dollar level is pretty tough for the market, and when the day's falls in Shanghai stocks are added in the impact is significant."The dollar and the euro both lost ground against the yen as large corporations in Japan began repatriating profits ahead of the end of the current quarter at the end of this week.Meanwhile, macroeconomic concerns about a second global recession also spooked forex brokers and provoked broad movements out of high-yield positions and into hedge currencies such as the dollar and the yen.For more information on foreign exchange treasury services and risk management, visit our Corporate FX site