For investors, June's job data could determine in this short July 4th holiday week if the stock market's recent rally is reignited or sputters out like a wet firecracker.

The monthly nonfarm payrolls report will come out on Thursday, instead of the usual Friday. U.S. markets will be closed on Friday, July 3, for the long Fourth of July, or Independence Day, holiday weekend.

Investors will pick apart the job figures and reams of other economic data released during the four-day week to see if recent signs of stabilization point to a sustainable economic recovery. Consumer confidence, the Institute for Supply Management's June index on U.S. manufacturing activity, and domestic car sales are among the major indicators on tap.

Although the U.S. economy has been mired in a recession since December 2007, investors' optimism has increased since early March amid growing signs that the extent of the economic slump is moderating.

That optimism has provided a crucial underpinning to stocks since the Standard & Poor's 500 Index <.SPX> hit a 12-year closing low on March 9. This spring, the S&P 500 climbed as much as 40 percent from that low; at Friday's close, it was still up 35.8 percent.

While unpleasant surprises may trigger a long-awaited correction, analysts said evidence of further economic stabilization would make the bulls grow bolder and help stocks break out of their recent consolidation range.

It is going to depend a lot on where the surprise is, Peter Jankovskis, co-chief investment officer at OakBrook Investments LLC in Lisle, Illinois, said, referring to the nonfarm payrolls data.

In the last report, people looked at the fact that the decline in payrolls was not nearly as large as expected, but the unemployment rate jumped tremendously. At the end of the day, that jump trumped things.

JOBLESS RATE NEAR 10 PERCENT

U.S. nonfarm payrolls are forecast to lose 355,000 jobs in June versus May's slide of 345,000, according to economists polled by Reuters.

The U.S. unemployment rate is projected to rise to 9.6 percent in June from 9.4 percent in May.

We think that a spike in the rate of unemployment could actually be a positive, as it may signal that discouraged workers are coming in from the sidelines and starting to look for work again, said Phil Orlando, chief equity market strategist at Federated Investors in New York.

There may be something else that plays out next week, a sort of portfolio window dressing effect. There's still a ton of cash sitting on the sidelines right now.

For the past week, the three major U.S. stock indexes were mixed. The blue-chip Dow Jones industrial average <.DJI> slipped 1.2 percent, while the S&P 500 dipped 0.3 percent, and the Nasdaq <.IXIC> gained 0.6 percent.

Holiday-shortened weeks tend to be volatile.

At the closing bell on Tuesday, Wall Street will write finis on trading for both the month of June and the second quarter. So there could be even more choppiness amid so-called window dressing in the coming week. That ritual calls for money managers to dump some losers and snap up recent standouts to spruce up portfolios -- and their quarterly returns.

MADOFF AND MOUNDS OF NUMBERS

Besides the focus on the economy, the holiday-shortened week will feature what promises to be a big spectacle -- the sentencing on Monday of confessed swindler Bernard Madoff for running a $65 billion Ponzi scheme.

In addition to the U.S. Labor Department's June jobs data, other reports to watch this week will include Tuesday's S&P/Case-Shiller reading on April home prices, the Chicago Purchasing Managers Index of June business activity in the U.S. Midwest, and the Conference Board's June consumer confidence report.

The ADP national employment survey for June is due on Wednesday, along with the Institute for Supply Management's June reading on manufacturing, May pending home sales, May construction spending and June domestic car and truck sales.

On Thursday, there will also be weekly initial jobless claims, which in recent weeks have tended to reinforce some hope of stabilization, and data on May factory orders.

It seems that the market is at least comfortable with the fact that the economy is on the horizon of the recovery. It's certainly not getting any worse, said Cleveland Rueckert, a market analyst at Birinyi Associates Inc in Stamford, Connecticut.

Our research shows that the market typically bottoms at the end of the recession, so confirmation of that will fuel continued gains. We're bullish long term.

With the start of the second-quarter earnings season looming, investors will keep an eye out for companies' outlooks or preannouncement. Aluminum producer Alcoa Inc is due to kick off the earnings season when it reports on July 7.

The Federal Reserve speakers' roster includes a speech by Federal Reserve Bank of St. Louis President James Bullard on the Fed's exit strategies on Tuesday, the very same day that Federal Reserve Bank of Kansas City President Thomas Hoenig speaks on bankruptcy and financial crisis.

(Reporting by Ellis Mnyandu; Additional reporting by Rachel Chang and Rodrigo Campos; Editing by Jan Paschal)

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