In Germany and other Western countries, where minimum wages exist for waitstaff and where
tipping is not culturally entrenched,
most tips take the form of rounding up to the nearest whole or half denomination of currency when the waiter is cashing a party out at their table.
By contrast,
waiters and waitresses in Japan refuse tips, which are sometimes even considered an insult. It is believed there that leaving a tip implies that the staff are not being paid enough by their employer, or that the customer believes the server must be paid extra to deliver a proper service.
Tipping is not customary in Asia, Australia and New Zealand and is not factored into wages of staff.