If they are to go down, many players will suffer a significant decrease in their wages.
'The Cottagers' spent heavily in the summer as they sought to improve their squad ahead of their top-flight return, signing the likes of Jean Seri, Alfie Mawson and Franck Zambo.
In order to attract players of such calibre they were forced to offer higher wages, however if they suffer relegation their earnings will significantly fall.
The move is designed to safeguard the club's financial future should they suffer relegation.
With clubs such as Wolves, Bolton Wanderers and Blackburn Rovers all falling down the division due to financial mismanagement, the clause allows clubs to handle their finances responsibly.