FOREX-Yen gains; shrinking output raises investor caution

* Yen extends broad rise as weak PMIs knock share markets

* High-yielders sink on expectations of global rate cuts

* BoE, ECB, RBA, RBNZ all seen slashing borrowing costs

* U.S. jobs data later this week also in focus

(writes through with quotes, comment, updates prices, changes byline)

By Veronica Brown

LONDON, Dec 1 (Reuters) - The Japanese yen strengthened broadly on Monday as slumping Chinese and European manufacturing activity kept investors on edge and dragged world share prices down.

Yen strength also weighed heavily on currencies of countries where central banks are expected to slash interest rates later this week including the euro, sterling and Australian dollar.  Continued...