Ballentine's Law Dictionary notes that this process is not literal, whereby a "person's property is figuratively brought into the court.
The earnings seized may be wages, certain benefits, or sales commissions.
A sheriff, constable, or marshall enforces the court order.
Under British law, a self-employed, unemployed, or member of the armed forces can not have an attachment against them. In Britain, the District Council can attach earnings. This may be by a physical removal of the money or other personal property. However, more commonly, the officer merely contacts the bank, landlord, employer, trustee, bailee or other person holding the property, with a certified copy of the order, for them to hand over the debtor's property for attachment; this is especially true with intangible personal property and real property.
In most jurisdictions in the United States, a limit of 10 percent of gross earnings may be taken for ordinary debts. However, 15 percent may be taken for student loans, and up to 40 percent for child support arrears , or even higher.
While some types of disability are exempt from attachment, only active duty members of the armed forces and disabled veterans are completely judgment proof.
In many American jurisdictions, attachment of earnings is treated the same as, or is just called, garnishment. This is when either earnings, and/or property may be taken by the court.