noun
company policy; corporate creed
Refers to the fundamental guiding principles or mission statement of a company, often formally established and publicly stated.
当社の社是は「誠実と革新」です。
Our company's creed is 'Integrity and Innovation'.
新入社員はまず社是を暗記させられる。
New employees are first made to memorize the company policy.
Compound of 社 (sha, 'company') and 是 (ze, 'rightness' or 'this'), literally meaning 'what is right for the company'.