[Code of Federal Regulations]
[Title 26, Volume 15]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 26CFR31.3221-3]

[Page 141-144]
 
                       TITLE 26--INTERNAL REVENUE
 
    CHAPTER I--INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY 
                               (CONTINUED)
 
PART 31_EMPLOYMENT TAXES AND COLLECTION OF INCOME TAX AT SOURCE--Table of Contents
 
Subpart C_Railroad Retirement Tax Act (Chapter 22, Internal Revenue Code 
                                of 1954)
 
Sec. 31.3221-3  Supplemental tax.

    (a) Introduction--(1) In general. Section 3221(c) imposes an excise 
tax on every employer, as defined in section 3231(a) and Sec. 
31.3231(a)-1, with respect to individuals employed by the employer. The 
tax is imposed for each work-hour for which the employer pays 
compensation, as defined in section 3231(e) and Sec. 31.3231(e)-1, for 
services rendered to the employer during a calendar quarter. This Sec. 
31.3221-3 provides rules for determining the number of taxable work-
hours.

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    (2) Overview. Paragraph (b) of this section defines work-hours. 
Paragraph (c) of this section demonstrates the calculation of work-
hours. Paragraph (d) of this section offers a safe harbor calculation of 
work-hours for use by any employer in lieu of calculating the number of 
work-hours for each employee.
    (b) Definition of work-hours--(1) In general. For purposes of 
section 3221(c) and this section, work-hours are hours for which the 
employee is compensated, whether or not the employee performs services.
    (i) Payments included in work-hours. Work-hours include regular time 
worked; overtime; time paid for vacations and holidays; time allowed for 
meals; away-from-home terminal time; called and not used, runaround, and 
deadheading time; time for attending court, participating in 
investigations, and attending claim and safety meetings; and guaranteed 
time not worked. Work-hours also include conversion hours, that is, 
compensation converted into work-hours. Conversion hours may be derived 
from payment by the mile or by the piece. Work-hours also include time 
for which the employee is paid for periods of absence not due to 
sickness or accident disability, such as for routine medical and dental 
examinations or for time lost.
    (ii) Payments excluded from work-hours. Certain kinds of payments 
are not subject to conversion into work-hours. These include those 
payments that are specifically excluded from compensation within the 
meaning of section 3231(e), such as certain sick pay payments (section 
3231(e)(1)(i)); tips (section 3231(e)(1)(ii)); and amounts paid 
specifically (either as an advance, as reimbursement, or allowance) for 
traveling expenses (section 3231(e)(1)(iii)). Traveling expenses paid 
under a nonaccountable plan are excluded from work-hours even though 
they are includible in compensation. See Sec. 31.3231(e)-1(a)(5). Also 
excluded from work-hours are amounts representing bonuses, amounts 
received pursuant to the exercise of an employee stock option, and all 
separation payments or severance allowances.
    (2) Hourly compensation. Because the tax under section 3221(c) is 
calculated on the basis of work-hours, the number of hours for which an 
employee receives compensation is the figure used to determine work-
hours. In the case of an hourly-rated employee, each hour for which the 
employee receives compensation is one work-hour.
    (3) Daily, weekly, monthly compensation. (i) If an employee is paid 
by the day, week, month, or other period of time, the tax is imposed on 
the number of hours comprehended in the rate and, if any, the number of 
overtime hours for which additional compensation is paid. Thus, in the 
case of an office worker who receives an annual salary based on an 8-
hour, 5-day-a-week work schedule that includes paid holidays, vacations, 
and sick time, the number of work-hours for one month is 174 (2088 
hours/year /12 months).
    (ii) The rule in paragraph (b)(3)(i) of this section is illustrated 
by the following examples.

    Example 1. A, an office worker, receives an annual salary that is 
paid monthly. The salary is based on an 8-hour, Monday through Friday 
work schedule. A is not paid for overtime hours. A is not expected to 
work on holidays, during A's annual vacation, or during periods that A 
is ill. The number of work-hours for one month is 174 (2088 hours/year /
12 months). This figure remains constant, even though some months have 
more workdays than others.
    Example 2. B is paid a stated amount for each day B works, 
regardless of the number of hours worked. However, if B works more than 
8 hours during any day, B is paid overtime for each additional hour 
worked that day. B is not paid for holidays, vacations, or sick time. 
During May, B worked 6 hours on 4 days, 7 hours on 6 days, 8 hours on 6 
days, and 9 hours on 5 days. Because B is paid a daily rate for up to 8 
hours, 8 hours are comprehended in the daily rate. Therefore, the number 
of work-hours for May is 173 (21 daysx8 hours/day+5 overtime hours), 
even though B actually worked 159 hours.

    (4) Conversion hours--(i) Compensation not based on time (hour, day, 
month, etc.), such as compensation paid by the mile or by the piece, 
must be converted into the number of hours represented by the 
compensation paid. Thus, if an employee is paid by the mile, 1 work-hour 
equals the number of miles constituting a workday, divided by 8 hours. 
However, in the case of a collective bargaining agreement that

[[Page 143]]

specifies a number of hours as constituting a workday, the number of 
hours specified under the agreement may be used instead of 8.
    (ii) The rule in paragraph (b)(4)(i) of this section is illustrated 
by the following example.

    Example. C's normal workday consists of 2 150-mile round trips that 
together take 6 hours. C is paid by the mile. The collective bargaining 
agreement does not specify the number of hours in a workday. Thus, the 
number of work-hours for each day C works is 8, or 1 work-hour for each 
37.5 miles (300 miles/day / 8 hours/day). If the applicable collective 
bargaining agreement specifies that 6 hours constitute a workday, the 
number of work-hours for each day C works would be 6.

    (c) Calculation of work-hours--(1) An employer may calculate the 
work-hours separately for each employee, as described in the examples in 
this paragraph. If the employer chooses to calculate work-hours 
separately for each employee, the employer must calculate the number of 
regular hours, overtime hours, and conversion hours for each employee 
for each month. In lieu of separate calculations, the employer may 
calculate the work-hours for all the employer's employees using the safe 
harbor formula described in paragraph (d) of this section.
    (2) The rules in paragraph (c) of this section are illustrated by 
the following examples.

    Example 1. D worked 8 hours a day, Monday through Friday, during the 
months of February and March 1992. D did not work on President's Day, 
but was paid for the holiday. D's work-hours for February were 160 (19 
days x 8 hours a day + 8 holiday hours). D's work-hours for March were 
176 (22 days x 8 hours a day).
    Example 2. E worked 7-hour shifts every Tuesday through Saturday 
during the months of February and March 1992. E also worked 7 overtime 
hours during February and 21 overtime hours during March. Also, E was 
paid for 7 hours on President's Day, even though E did not work on that 
day. The number of work-hours for February was 161 (21 days x 7 hours a 
day + 7 overtime hours + 7 holiday hours). The number of work-hours for 
March was 168 (21 days x 7 hours a day + 21 overtime hours). Because E 
receives an hourly wage and was paid for the President's Day holiday, 
the number of hours (7) for which E was paid are added to the hours E 
actually worked. If E had worked on President's Day and had received 
extra pay for working on a holiday and holiday pay for 7 hours, the 
employer would include 14 hours in E's work-hours for that day, the 7 
hours E actually worked and the 7 holiday hours for which E was paid.
    Example 3. Employment beginning during month. F began employment on 
March 16, a Monday, and worked 8 hours a day, Monday through Friday. The 
employer calculates that F's hours for the month were 96, because F 
worked 12 8-hour days during the month. If March 16 were on a Friday, 
the employer would calculate 11 days, or 88 hours.
    Example 4. Employment ending during month. G's last day of 
employment was Friday, March 13. G worked 8 hours a day, Monday through 
Friday, except for March 3, when G was ill. G was paid for 8 hours for 
March 3. The employer calculates that G's work-hours for March were 80, 
because G worked 9 8-hour days and was paid for an additional 8 hours.

    (d) Safe harbor--(1) In general. In lieu of calculating work-hours 
separately for each employee, an employer may use the safe harbor for 
all employees. If the employer elects to use the safe harbor for a 
calendar year, the employer must use the safe harbor for all employees 
for the entire calendar year. If an employer uses the safe harbor for a 
calendar year, the employer need not elect the safe harbor for the 
following calendar year. An employer that elects the safe harbor for a 
calendar year may not subsequently elect to separately calculate 
employee work-hours for that calendar year.
    (2) Method of calculation. The safe harbor treats each employee of 
the employer as receiving monthly compensation for a number of hours 
equal to the safe harbor number. To determine the number of work-hours 
for a month, the employer multiplies the safe harbor number by the 
number that equals the total number of employees to whom the employer 
paid compensation during the month.
    (i) Safe harbor number defined. The safe harbor number is the number 
established in guidance of general applicability promulgated by the 
Commissioner.
    (ii) Employee defined. Solely for purposes of this paragraph, an 
employee is any individual who is paid compensation, within the meaning 
of Sec. 31.3231(e)-1, regardless of the amount, during the month. Thus, 
for example, a part-time, temporary, or seasonal employee is

[[Page 144]]

counted as an employee. A terminated employee is counted in the month of 
termination (provided the terminated employee received compensation in 
the month of termination), but not in any subsequent month in which the 
employee does not perform service for the employer as an employee, even 
if the terminated employee is paid compensation in a subsequent month. 
Thus, for example, an employee who terminates employment during the 
month, receives compensation during the month of termination, and 
receives a final paycheck the following month is counted as an employee 
of the employer for the month of termination but not for the following 
month.
    (3) Method of election. An employer makes the safe harbor election 
for a calendar year on the employment tax return filed for the previous 
calendar year.
    (4) Additional rules. The Commissioner may, in revenue procedures, 
revenue rulings, notices, or other guidance of general applicability, 
revise the safe harbor number or provide additional safe harbors that 
satisfy section 3221(c).
    (e) Effective dates. This Sec. 31.3221-3 is effective for calendar 
years beginning after December 31, 1992, except that paragraph (d) is 
effective for calendar years beginning after December 31, 1993. 
Taxpayers may apply the rules in paragraphs (a), (b), and (c) of this 
section before January 1, 1993.

[T.D. 8525, 59 FR 9666, Mar. 1, 1994]