What can companies do to reduce uncollectible accounts receivable?

Always make Aging for AR on weekly basis and send it to the operation managers and sales team as well in order to know all why it didn't collected yet , either the customer can't pay Or there is error in invocie Or any rject from customer need to be solved , finally i think by make Aging on wekkly basis and pass it to your manager and GM as well then everything well be clear enough in order we all can take the necessary action for collecting any late invocies regardless the reason ot that.

MONITORING AND CONTROL

STIMULUS DISCOUND FOR GOOD PAYEMENTS

REVIEW CREDIT

CONTROL SALES FOR  BAD RECEIVABLES

MAKE PROVISION FOR DOUBTFULL DEBITS 

By actively monitoring thier collections and add surcharges for late payments or stop doing business with late payers (if they can).

to ,imit credit days