US STOCKS-Wall St falls on simmering Greece worries, tepid data
* IMF warns Greece needs debt extension
* June U.S. nonfarm payrolls increase less than expected
* Average hourly earnings unchanged
* Seven of the 10 S&P sectors down
* Indexes down: Dow 0.24 pct, S&P 0.13 pct, Nasdaq 0.21 pct (Updates prices, changes byline)
By Sinead Carew
July 2 (Reuters) - U.S. stocks extended losses on Thursday after the International Monetary Fund warned Greece may need a large debt write-off, and muted U.S. jobs data dampened the economic outlook.
Seven of the 10 major S&P sectors were in the red in late afternoon trading, after a positive opening on the last day of trading before a long weekend.
IMF's warning comes as Greece readies for a Sunday referendum on an international bailout deal that Prime Minister Alexis Tsipras has urged voters to reject. Continuación...