A regular/permanent full-time employee employed without a fixed-term contract, typically with standard benefits (social insurance, bonuses) compared with contract or temporary staff.
彼は大学卒業後、大手メーカーに正社員として入社した。
After graduating from university, he joined a major manufacturer as a regular employee.
正社員になると、昇給や賞与、社会保険などの待遇が変わることが多い。
When you become a permanent employee, your待遇 (pay raises, bonuses, social insurance, etc.) often changes.
会社は業績不振のため契約社員を減らしたが、正社員の数は維持した。
Because of poor business performance the company reduced contract workers but maintained the number of permanent employees.
正社員と派遣社員では、雇用の安定性や福利厚生に違いがある。
There are differences in job security and benefits between permanent employees and temporary staff.