Formula One teams are dead against extending the end of the 2011 season from November 27 to December 11, according to Mercedes GP team principal Ross Brawn.
Speaking to motor sports website autosport.com Brawn said that shifting the Indian Grand Prix from October 30 to either December 4 or December 11 would create logistical problems for team members of all the teams.
"It is getting too much," said Brawn. "Our guys have been working since January, we don't have test teams anymore, so the same guys have been working since January and we are asking them to work into December and that means there is no time for a holiday before Christmas and that would mean getting straight back in to it in January.
"So personally I think it is unacceptable and we've told Bernie (Ecclestone) that and he knows our opinion. If we continue to take those sort of approaches then we will run into problems because our people cannot be expected to work in that environment and situation, so I think it is totally unacceptable."
The root of the problem is Formula One Management (FOM) CEO Ecclestone's insistence to re-instate the Bahrain Grand Prix in the 2011 F1 calendar.
The race was due to be the season opener on March 13, but had to be dropped due to popular protests against the Bahraini monarchy and government that brought the country to a standstill.
F1's governing body, the International Automobile Federation (FIA), is to take a final decision on Friday, June 3 on whether or not it is suitable for F1 to return to the Persian Gulf state.
Amongst the FIA's considerations would be the ethical issues of going to Bahrain in light of reports that a quarter of the race's local staff were arrested and sacked on religious grounds.