The IMF said 2009 had seen a shrinking of the economy by 2 percent in the wake of the global economic crisis.
Cambodia has had diplomatic relations with Iran since 1992, but it has not established an embassy or consulate.
The general strike, which will hit Cambodia's main economic earner, is scheduled for Sept. 13 through Sept. 18.
Members include senior government adviser Om Yientang, who is the head of the unit, and his three deputies.
Trade between the two countries has increased steadily over the past 10 years.
The government's Anti-Corruption Unit is preparing a plan to help ensure businesses and investors are protected from corruption.
Investors have been flocking to gold in recent years as a hedge against uncertainty in money and other markets.
The fresh accusations of corruption came after the tax collection department of the Ministry of Finance issued a notice last week.