golden handcuffs

US /ˈɡoʊldən ˈhændˌkʌfs/
UK /ˈɡoʊldən ˈhændˌkʌfs/
"golden handcuffs" picture
1.

financial incentives and benefits that discourage employees from leaving a company, even if they are unhappy with their job

:
Many executives are tied to their companies by golden handcuffs, making it hard for them to leave.
The generous stock options acted as golden handcuffs, keeping her at the firm for years.