Thousands of field force workers at the gas giant Cadent were due to strike on Monday 30th May.
But the strike has been suspended after last minute discussions led to an improved pay offer.
Workers had previously rejected a below inflation pay increase of 2 per cent for 2021 and 4 per cent from July 22.
The key part of the new offer is a Retail Prices Index inflationary increase from July 2023, with a guaranteed 5% minimum.
Gary Carter, GMB National Officer, said:
“We’re in the midst of the worst cost of living crisis in a generation. Working people across the country are struggling to make ends meet.
“We will take this improved pay offer back to our members to consider. The inflation link on the pay offer is crucial to ensure workers can cover increasing living costs.”