BG Group's CEO Helge Lund started the job just two months ago.
And now, Lund could take home as much as $43 million in compensation, Bloomberg's Mikael Holter reports.
On Tuesday, Royal Dutch Shell announced it is taking over the British gas company for about $70 billion.
As part of the deal, Lund's package includes one year's gross salary pay and 30% of base pay if he leaves the company.
The same applies to other directors because its penned in their contracts, according to Reuters.
Lund's compensation created controversy before he even started. Last December, investors pressured BG Group into slashing his first year pay, Reuters reported.
Lund will be in charge of BG until the acquisition is complete and will likely leave after, Shell CEO Ben van Beurden said on a conference call Wednesday, according to Bloomberg.
BG shares surged by nearly 37% in London on Wednesday.