3.5.a: All work, including overtime, must be voluntary. The facility shall not engage in any form of forced or bonded labor. This includes human trafficking, the holding of original identity papers, prohibiting workers from leaving the premises after their shift or other coercion intended to force anyone to work. 3.5.b: Where the holding of original identity papers is required by national law, such papers must be immediately returned to employees upon request and readily available to them at all times.