31.   Economists caution that signs of unions flexing their muscles could alarm the European Central Bank.

32.   Economists caution that the May improvement is likely to be only temporary.

33.   Economists caution that any sign of German unions flexing their muscles in wage talks could alarm the European Central Bank.

34.   Meanwhile, economists are cautioning against expecting the Fed to cut interest rates any time very soon.

35.   Nonetheless, economists caution that the benefits of the labor reform bill will not be felt for some time.

36.   Not so fast, some economists caution.