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If you provide your employees a paid break, you can configure how much break time an employee accrues. Here at MacPractice, for example we offer 15 minutes of paid break per every 4 hours, usable by using the Clock Break option (Discussed in Clocking In and Out, and Clocking Break)
You'll also want to review the Overtime options. You can set the Overtime calculation threshold based on how many hours per week, and you can also set a daily limit on how many hours can be worked before Overtime accrues. Configure these as it makes sense for your office.
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