A deal to end the bitter dispute over jobs at Lindsey oil refinery in North Lincolnshire is understood to have been agreed.
The agreement was reportedly thrashed out between unions and the employers of contract staff on the expansion project after lengthy talks this week.
The deal is to be put to workers at a mass meeting at the site on Monday.
It is understood the agreement could include the reinstatement of 647 workers at the oil refinery who sacked for taking unofficial action in protest at the laying off of 51 employees by a sub-contractor.
The dispute has caused widespread wildcat strikes across Britain.