Social Life In Workplace

I was not opportuned to work in a big company while back home but i have that opportunity here. The two companies i have worked with both have  excellent and regular social activities (summer parties, free drink evenings, family day, valentine parties, time out horse racing etc). I was just wondering if this is the case in Nigeria/other countries. Is there really regular social activities apart from the usual christmas party? No hard feelings, no arguement, just want to see what social activity is like in companies/countries and if this has any positive/negative effect on us.