Citation: 4A_721/2012 E. 2

Vor Bundesgericht streitig ist nur noch der Bonus für die Jahre 2008 und 2009 sowie die Art der Auszahlung. Im Arbeitsvertrag wird auf die " Regulations for Members of Senior Management " verwiesen, die in Ziff. 4 unter dem Titel " Bonus " festhalten: " The Company at its discretion may pay a bonus in addition to the annual salary. However, there is no entitlement to a bonus, irrespective of whether such payments were made in previous years. Whether a bonus is paid at all, as well as the amount of any bonus depends on the performance of X.________ AG, the relevant department and the personal performance of the individual and their contribution to the current and future success of the Company. A bonus will only be awarded if neither the Member of Senior Management nor the Company have delivered notice of termination before the time of the written notification of the bonus. "