In my previous company, initially, we had a policy where an employee's spouse could not be hired. If any employee fell in love with another employee, then one of them needed to quit within a maximum of three months from the date of marriage. Later, we found it hard as we lost some valuable employees because of this policy. So, the management revised the policy to state that an employee and his/her spouse cannot work in the same department or under the same reporting authority. Now, everything is going fine.
Normally, companies hesitate to hire the spouse of an employee due to the possibility of ego clashes arising from factors like salary, designation, etc., which can create problems for management.
However, there are also some advantages to having couples as employees in the company. For instance, it can help with attrition as an employee may think twice before resigning if his/her spouse also works in the same company. It can also ease transfers, making it simpler to relocate an employee to another location along with his/her spouse for on-site assignments, and more.
Regards,
Kartheka R