... and overtime pay are awarded according to...


Time off instead of pay for working overtime
Instead of paying for overtime, some employers offer 'time off in lieu' (TOIL). This is agreed between you and your employer, and any time you take off will normally be at a time that suits the employer. Some companies have rules on when time off can be taken, but others arrange time off on a case by case basis.

http://www.direct.gov.uk/en/Employment/Employees/WorkingHour...

http://www.pedr.co.uk/textpage.asp?PageNo=38

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Note added at 14 mins (2011-07-01 15:32:21 GMT)
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Tutaj jest dobry przykład:

Time off in lieu of overtime is a feature of all employment contracts, but is of particular importance when dealing with professional experience employment. It is recognised that there will be times when all members of the office team may be required to work overtime to meet a project deadline. In the case of student and graduate professional experience employees, who are already juggling the demands of combining work and study, the RIBA recommends that time off is awarded in lieu of the overtime worked, rather than overtime pay being awarded.

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Note added at 15 mins (2011-07-01 15:33:16 GMT)
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"according" można oczywiście zamienić na "in line with", "in accordance" etc