Trade newspaper Variety reports US network NBC is preparing to pay producers Warner Brothers $5m (£3.1m) to keep the show in production until 2002.
The show's six stars - Jennifer Aniston, Matthew Perry, Courteney Cox, Matt LeBlanc, Lisa Kudrow and David Schwimmer - are already making around $100,000 (£63,000) per show.
The paper quotes insiders are predicting the actors could earn at least $250,000 (£159,000) under the new deal.
![[ image: width=150]](/olmedia/395000/images/_399934_er_cast150.jpg)
The programme has had a history of salary dispures since it started in 1994, when the actors were paid just $1,600 (£1,000) an episode. In 1996, the cast threatened to go on strike unless they received pay increases.
Last year Warner Bros paid the Friends stars a Christmas bonus of $200,000 (£126,000) designed to keep them with the series.
As well as being a worldwide hit, Friends has helped NBC to dominate Thursday nights on US television, attracting an average of 23.5m viewers each week.
It is the country's most-watched comedy, and the second most-watched show overall behind medical drama ER - which is also made by Warner Bros for NBC. It has also held its popularity - in contrast to steep declines shown by other NBC shows.
NBC recently paid Warner Bros $13m ($8.2m) per show for three more seasons of ER. The Friends deal could be worth a smiliar amount on a cost-per-hour basis, earning Warner Bros $10m (£6.3m) per hour.
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