Investing.com - Shares in Tokyo fell on Monday in light trading with several regional markets shut for holidays and with a lag from last week with U.S. markets shut on Friday and direction from U.S. jobs data and a tentative pact on Iran's nuclear program awaiting more assessment.
The Nikkei 225 fell 0.19% at the break.
On Monday, markets in Australia, New Zealand, China, Europe and the U.K. will remain closed for holidays.
In the U.S., the Institute of Supply Management is to release data on service sector activity.
Western powers negotiated a tentative nuclear deal with Tehran, which has stoked debate about the extent of any wider thaw in Middle East tensions.
As part of the preliminary accord, the U.S. and the European Union agreed to loosen financial and economic sanctions against Iran that have restricted the nation's oil supply over the last four years.
The deal has exacerbated concerns among energy traders that a glut of Iranian oil could depress prices in a global market that is already saturated with an oversupply.
On the data front, a report that showed the U.S. economy added 126,000 new jobs in March, the smallest increase since December 2013. Economists had forecast jobs growth of 245,000 last month.
The surprisingly weak report added to concerns over the outlook for economic growth after other recent economic data pointed to a slowdown at the start of the year.
A slowing labor market could prompt the Federal Reserve to reconsider a planned increase in interest rates. Last month the Fed indicated that the first rate increase could come as soon as June, but added that continued improvement in labor markets would be a key factor it would consider.