Jim Parsons, Johnny Galecki, Kaley Cuoco, Simon Helberg, and Kunal Nayyar made the gesture while Bialik and Rauch are still in the process of negotiating new contracts, seeking parity with their co-stars, reported Variety.
The original five stars, who currently earn around USD 1 million per episode, would make USD 100,000 less per episode in a potential 11th and 12th seasons.
That USD 500,000 would be split between Rauch and Bialik, who are both currently in the USD 200,000 range, bringing their new per episode pay to around USD 450,000.
In the last "Big Bang" contract renewal cycle, Helberg and Nayyar secured raises that eventually brought them to seven-figure parity (as of this current season) with Parsons, Galecki and Cuoco.
Currently in its 10th season, the long-running comedy is expected to be renewed for two seasons, executive producer Bill Prady previously wrote on his Facebook that the deal was already done.
Disclaimer: No Business Standard Journalist was involved in creation of this content