Any work in excess of eight hours in one workday, in excess of 40 hours in one workweek, or in the first eight hours worked on the seventh day of work in any one workweek shall be at the rate of one and one-half times the regular rate of pay. Any work in excess of 12 hours in one day or in excess of eight hours on any seventh day of a workweek shall be paid no less than twice the regular rate of pay. California Labor Code section 510. Exceptions apply to an employee working pursuant to an alternative workweek adopted pursuant to applicable Labor Code sections and for time spent commuting. (See Labor Code section 510 for exceptions).