Definition: In this task, you are given text for US Congressional and California state bills, your task is to generate a summary for this bill.
Input: SECTION 1. SHORT TITLE.

This Act may be cited as the ''Mobile Workforce State Income Tax
Simplification Act of 2012''.

SEC. 2. LIMITATIONS ON STATE WITHHOLDING AND TAXATION OF EMPLOYEE
INCOME.

(a) In General.--No part of the wages or other remuneration earned
by an employee who performs employment duties in more than one State
shall be subject to income tax in any State other than--
(1) the State of the employee's residence; and
(2) the State within which the employee is present and
performing employment duties for more than 30 days during the
calendar year in which the wages or other remuneration is
earned.
(b) Wages or Other Remuneration.--Wages or other remuneration
earned in any calendar year shall not be subject to State income tax
withholding and reporting requirements unless the employee is subject
to income tax in such State under subsection (a). Income tax
withholding and reporting requirements under subsection (a)(2) shall
apply to wages or other remuneration earned as of the commencement date
of employment duties in the State during the calendar year.
(c) Operating Rules.--For purposes of determining penalties related
to an employer's State income tax withholding and reporting
requirements--
(1) an employer may rely on an employee's annual
determination of the time expected to be spent by such employee
in the States in which the employee will perform duties
absent--
(A) the employer's actual knowledge of fraud by the
employee in making the determination; or
(B) collusion between the employer and the employee
to evade tax;
(2) except as provided in paragraph (3), if records are
maintained by an employer in the regular course of business
that record the location of an employee, such records shall not
preclude an employer's ability to rely on an employee's
determination under paragraph (1); and
(3) notwithstanding paragraph (2), if an employer, at its
sole discretion, maintains a time and attendance system that
tracks where the employee performs duties on a daily basis,
data from the time and attendance system shall be used instead
of the employee's determination under paragraph (1).
(d) Definitions and Special Rules.--For purposes of this Act:
(1) Day.--
(A) Except as provided in subparagraph (B), an
employee is considered present and performing
employment duties within a State for a day if the
employee performs more of the employee's employment
duties within such State than in any other State during
a day.
(B) If an employee performs employment duties in a
resident State and in only one nonresident State during
one day, such employee shall be considered to have
performed more of the employee's employment duties in
the nonresident State than in the resident State for
such day.
(C) For purposes of this paragraph, the portion of
the day during which the employee is in transit shall
not be considered in determining the location of an
employee's performance of employment duties.
(2) Employee.--The term ''employee'' has the same meaning
given to it by the State in which the employment duties are
performed, except that the term ''employee'' shall not include
a professional athlete, professional entertainer, or certain
public figures.
(3) Professional athlete.--The term ''professional
athlete'' means a person who performs services in a
professional athletic event, provided that the wages or other
remuneration are paid to such person for performing services in
his or her capacity as a professional athlete.
(4) Professional entertainer.--The term ''professional
entertainer'' means a person who performs services in the
professional performing arts for wages or other remuneration on
a per-event basis, provided that the wages or other
remuneration are paid to such person for performing services in
his or her capacity as a professional entertainer.
(5) Certain public figures.--The term ''certain public
figures'' means persons of prominence who perform services for
wages or other remuneration on a per-event basis, provided that
the wages or other remuneration are paid to such person for
services provided at a discrete event, in the nature of a
speech, public appearance, or similar event.
(6) Employer.--The term ''employer'' has the meaning given
such term in section 3401(d) of the Internal Revenue Code of
1986 (26 U.S.C. 3401(d)), unless such term is defined by the
State in which the employee's employment duties are performed,
in which case the State's definition shall prevail.
(7) State.--The term ''State'' means any of the several
States.
(8) Time and attendance system.--The term ''time and
attendance system'' means a system in which--
(A) the employee is required on a contemporaneous
basis to record his work location for every day worked
outside of the State in which the employee's employment
duties are primarily performed; and
(B) the system is designed to allow the employer to
allocate the employee's wages for income tax purposes
among all States in which the employee performs
employment duties for such employer.
(9) Wages or other remuneration.--The term ''wages or other
remuneration'' may be limited by the State in which the
employment duties are performed.

SEC. 3. EFFECTIVE DATE; APPLICABILITY.

(a) Effective Date.--This Act shall take effect on January 1 of the
2d year that begins after the date of the enactment of this Act.
(b) Applicability.--This Act shall not apply to any tax obligation
that accrues before the effective date of this Act.
Output:
Mobile Workforce State Income Tax Simplification Act of 2012 - Prohibits the wages or other remuneration earned by an employee who performs employment duties in more than one state from being subject to income tax in any state other than: (1) the state of the employee's residence, and (2) the state within which the employee is present and performing employment duties for more than 30 days during the calendar year. Exempts employers from withholding of tax and information reporting requirements for employees not subject to income tax under this Act. Allows an employer, for purposes of determining penalties related to employer withholding or reporting requirements, to rely on an employee's annual determination of the time such employee will spend working in a state in the absence of fraud or collusion by such employee.

Exempts from the definition of "employee" for purposes of this Act professional athletes, professional entertainers, and public figures who are persons of prominence who perform services for wages or other remuneration on a per-event basis.