Original sentence: A tip (also known as a gratuity) is that amount of payment to certain service sector professionals which is in addition to the advertised bill or fee.As a rule, the proprietor/owner of a business would not expect an additional tip.In some jurisdictions, tipped workers qualify for a lower statutory minimum wage from the employer, who must make up any deficiency in tips.In the United Kingdom, tipping is an established custom but is less widespread than in the USA, and the expected percentage lower.In this case no additional tip need be added to the total.Many restaurants will automatically add a optional gratuity of around 18% to the bill for large parties (often defined as 6 or more people)—if this is done the amount should be clearly indicated on the check as a “gratuity”.Notable distinctions include pub/bar staff, where no tip is expected.These payments and their size are a matter of social custom.To give a very small tip might be considered even worse than giving nothing
Edited sentence: A tip (also known as gratuity) is a small amount of money received by some service sector professionals from persons they serve, in addition to or instead of a formally required payment.Also it may be worse to give a very small tip than to give nothing.As a rule, owners are never tipped.If this is done the amount should be clearly indicated on the check as a “gratuity”.In some jurisdictions, tipped workers work for a lower minimum wage from the employer, who must make up any deficiency in tips.In this case no additional tip need be added to the total, and in fact it is not obligatory to pay the suggested “gratuity”.Many restaurants will automatically add a gratuity of around 18% to the bill for large parties (often defined as 6 or more people)—this is alleged to be because large groups tend to underestimate the amount required for a proportionate tip.These transactions are governed by social custom