Life span of a 24″ Dell LCD Monitor?

I have a 24" LCD monitor for work, (new) that company policy dictates must be on during work hours (9 hours a day, not sure of the logic behind it). I was wondering how long this would span before it dims or goes dead.

Details -

Resolution of 1920X1080, 60Hz refresh rate

The input is either HDMI or DVI.

125v power cord.

US Auctions Australian Auctions Austrian Auctions Belgian Auctions Canadian Auctions French Auctions German Auctions Indian Auctions Irish Auctions Italian Auctions Dutch Auctions Polish Auctions Spanish Auctions Swiss Auctions UK Auctions

Best Match Time: ending soonest Time: newly listed Price: lowest first Price: highest first Price + Shipping: lowest first Price + Shipping: highest first

Dual LCD Panel Monitor TV Desk Mount for 10 24 New    US $1.26

Samsung SyncMaster 244T 24 Widescreen LCD Flat Panel Monitor PARTS REPAIR    US $11.00

AOC 2436VW 24 Widescreen LCD Monitor Black    US $24.50