Pirelli is pushing for an early decision as to whether it will remain F1’s official tyre supplier beyond 2013.
The Italian marque’s initial three-year tenure finishes at the end of next season.
"The deadline is June next year," motor sport director Paul Hembery is quoted by Brazil’s Totalrace, "but we want to know the decision as soon as possible.
"If we need to find a different job for 300, 400 people, we need to know this in advance."