一些企业经常任意延长员工的工作时间，并且不算加班，这样的事情经常发生怎么翻译？

Some business enterprises usually prolong the employee's work time arbitrarily, and work overtime not and on the whole, such of the affair usually takes place(一些企业经常任意延长员工的工作时间，并且不算加班，这样的事情经常发生)
Still having these a business enterprise most is stillprivate enterprise and some outside 企s, the stateowned business enterprise makes of return calculate better!(还有这些企业多数是私营企业和一些外企，国有企业作的还算比较好！)