The best advice is the simplest. Resolve to keep the precepts, or to follow the ten forms of wholesome conduct. They should keep you safe, and provide an excellent foundation for mindfulness.
There is further advice from the Buddha about our duties towards employers in the Dighajanu Sutta http://www.accesstoinsight.org/tipitaka/an/an08/an08.054.nara.html
by whatsoever activity a householder earns his living, whether by farming, by trading, by rearing cattle, by archery, by service under the king, or by any other kind of craft — at that he becomes skillful and is not lazy. He is endowed with the power of discernment as to the proper ways and means; he is able to carry out and allocate (duties). This is called the accomplishment of persistent effort.
And much the same thing spelt out in the Sigalovada Sutta http://www.accesstoinsight.org/tipitaka/dn/dn.31.0.nara.html
where the lay person is encouraged to show respect to his employer in the following ways:
(i) they rise before him,
(ii) they go to sleep after him,
(iii) they take only what is given,
(iv) they perform their duties well,
(v) they uphold his good name and fame.
I don't think I could follow these literally, as spending more time at work than my workaholic boss would increase my stress levels and put an end to any meditation practice. But I have found that following the general spirit of these - doing one's best, and being a willing worker - keeps me happier. A day spent shirking and clock-watching makes me feel really bad, in fact.