Michigan Compiled Laws, Chapter 552. Divorce § 552.611a

Sec. 11a. (1) If there is more than 1 order to withhold income for support, fees, or health care coverage premiums against a payer or parent under this act, the source of income shall comply with all of the notices to withhold income to the extent that the total amount withheld from the payer's or parent's income does not exceed 50% of the payer's disposable income as that term is defined in 15 USC 1672. The source of income shall comply with the notices as follows:

(2) A source of income is liable for an amount that the source knowingly and intentionally fails to withhold from the payer's income following service on the source of income of a notice of income withholding, except to the extent that the amount is limited by subsection (1).

(3) A source of income shall identify each withholding by payer, payer's social security number, case numbers, amount withheld, and the date on which support was withheld from the payer's income. If the source of income is an employer, it shall also provide its federal employer identification number. A source of income may meet the requirements of this subsection through the use of an automated reporting system established by the SDU.

(4) A source of income may combine amounts withheld from payers' incomes in a single payment and separately identify by payer, social security number, and case number the portion of the single payment that is attributable to each individual payer.