REFILE-TREASURIES-Longer-dated bonds hit by supply concerns

(Corrects typo of "Longer-dated" in headline)

* Supply worries hit longer-dated debt

* Move comes despite some weakness in stocks

* Jobless data paints grim picture for employment (Adds strategist quote, updates prices, adds byline)

By Chris Reese

NEW YORK, Nov 6 (Reuters) - Longer-dated U.S. Treasury debt prices fell on Thursday in worries that a pending flood of government debt supply will significantly dilute the market.

The drop came despite some early weakness in stocks, which would normally boost bids for lower-risk Treasury debt.

The Treasury announced on Wednesday it will sell $55 billion of 3-year notes, 10-year notes and will sell reopened 30-year bonds next week to meet its quarterly refunding needs. The amount was at the higher end of analysts' forecasts and was significantly above the $18 billion refunding in November of last year.

"Supply is certainly a factor here," said Kim Rupert, managing director of global fixed income analysis at Action Economics in San Francisco.

Benchmark 10-year Treasury notes US10YT=RR were trading 17/32 lower in price for a yield of 3.77 percent from 3.70 percent late on Wednesday, while 30-year bonds US30YT=RR were 1-8/32 lower for a yield of 4.24 percent from 4.17 percent.

Equities investors continued to fret over the expected depth of the global economic downturn, despite aggressive interest rate cuts by the Bank of England and the European Central Bank, and turned to lower-risk assets such as Treasuries.

However, bond investors remained keenly aware of the raft of pending debt supply needed to fund various packages intended to bolster struggling financial markets.

Data on Thursday did little to change a relatively grim picture on employment. The number of U.S. workers filing new claims for jobless benefits fell by 4,000 last week to 481,000, but the Labor Department revised up its estimate for jobless claims in the prior week to 485,000 from a previously reported 479,000. For details see [ID:nN05310593].

Also, data showed U.S. non-farm business productivity grew at the slowest pace this year during the third quarter as output fell at the sharpest rate in seven years. [ID:nN05484591].

Two-year Treasury notes US2YT=RR were trading unchanged in price for a yield of 1.34 percent. (Reporting by Chris Reese; Editing by Tom Hals)