Microsoft Corp (NASDAQ:MSFT) shares are trading flat Thursday and lower by 3% over the trailing week, as traders and investors digest this week’s key economic data. ADP data Thursday showed weaker-than-expected private sector job growth, which can signal a slowing economy. Market participants will be watching carefully as Thursday’s ADP data suggests Friday’s official payroll report may come in weaker-than-anticipated. What To Know: Investors might fear that a cooling labor market could dampen consumer spending and reduce demand for tech products and services. August saw 99,000 jobs added, bel…