Cal. Labor Code § 2857 : California Labor Code — Employment Relations — Employer And Employee — Obligations Of Employee — Performance of services in conformity with usage of place of performance Date: 15 Sep 2016 TEXT PDF Current through the 2016 Legislative Session An employee shall perform his service in conformity to the usage of the place of performance, unless otherwise directed by his employer, or unless it is impracticable or manifestly injurious to his employer to do so. Ca. Lab. Code § 2857