Many times employees do not work 8 hours focused, sometimes they just do not come because of "sickness" just because they do not feel productive, or they come late-leave late occassionally because of a private need. Many employers understand that and tolerate that, as long as it is not impacting the general performance. So when company needs the employee occasionally out of office hours, the employee should do his/her best. If both parties are not abusing the situation everything is ok. Many times I am busy with a private issue at office hours but sometimes in a not-so-important private time my company needs me and I am happy to provide my support. With job contract I don't sell my 40 hours strictly, but I set up a continuous relationship with my employer to get the job done, which sometimes may require sacrifice of private time.
