No major benefit barring that your salary comes before 7th
Cons
Politics Politics Politics
No growth opportunities
Workplace harrasment and no support from management
Nothing new to learn
1980-90's mindset
Extremely prejudiced to new ideas
Resilience to new tech
Greedy top Management
Mindset of management in Oss is like favoured to offer you a job.
Cons
Only politics. No appreciation for your good work, they will totally ignore. If employee makes minor mistake at work then everybody will be all around to put you down.