### U.S. Code of Federal Regulations

Regulations most recently checked for updates: Apr 01, 2023

### § 778.100 - The maximum-hours provisions.

Section 7(a) of the Act deals with maximum hours and overtime compensation for employees who are within the general coverage of the Act and are not specifically exempt from its overtime pay requirements. It prescribes the maximum weekly hours of work permitted for the employment of such employees in any workweek without extra compensation for overtime, and a general overtime rate of pay not less than one and one-half times the employee's regular rate which the employee must receive for all hours worked in any workweek in excess of the applicable maximum hours. The employment by an employer of an employee in any work subject to the Act in any workweek brings these provisions into operation. The employer is prohibited from employing the employee in excess of the prescribed maximum hours in such workweek without paying him the required extra compensation for the overtime hours worked at a rate meeting the statutory requirement.

### § 778.101 - Maximum nonovertime hours.

As a general standard, section 7(a) of the Act provides 40 hours as the maximum number that an employee subject to its provisions may work for an employer in any workweek without receiving additional compensation at not less than the statutory rate for overtime. Hours worked in excess of the statutory maximum in any workweek are overtime hours under the statute; a workweek no longer than the prescribed maximum is a nonovertime workweek under the Act, to which the pay requirements of section 6 (minimum wage and equal pay) but not those of section 7(a) are applicable.

### § 778.102 - Application of overtime provisions generally.

Since there is no absolute limitation in the Act (apart from the child labor provisions and regulations thereunder) on the number of hours that an employee may work in any workweek, he may work as many hours a week as he and his employer see fit, so long as the required overtime compensation is paid him for hours worked in excess of the maximum workweek prescribed by section 7(a). The Act does not generally require, however, that an employee be paid overtime compensation for hours in excess of eight per day, or for work on Saturdays, Sundays, holidays or regular days of rest. If no more than the maximum number of hours prescribed in the Act are actually worked in the workweek, overtime compensation pursuant to section 7(a) need not be paid. Nothing in the Act, however, will relieve an employer of any obligation he may have assumed by contract or of any obligation imposed by other Federal or State law to limit overtime hours of work or to pay premium rates for work in excess of a daily standard or for work on Saturdays, Sundays, holidays, or other periods outside of or in excess of the normal or regular workweek or workday. (The effect of making such payments is discussed in §§ 778.201 through 778.207 and 778.219.)

### § 778.103 - The workweek as the basis for applying section 7(a).

If in any workweek an employee is covered by the Act and is not exempt from its overtime pay requirements, the employer must total all the hours worked by the employee for him in that workweek (even though two or more unrelated job assignments may have been performed), and pay overtime compensation for each hour worked in excess of the maximum hours applicable under section 7(a) of the Act. In the case of an employee employed jointly by two or more employers (see part 791 of this chapter), all hours worked by the employee for such employers during the workweek must be totaled in determining the number of hours to be compensated in accordance with section 7(a). The principles for determining what hours are hours worked within the meaning of the Act are discussed in part 785 of this chapter.

### § 778.104 - Each workweek stands alone.

The Act takes a single workweek as its standard and does not permit averaging of hours over 2 or more weeks. Thus, if an employee works 30 hours one week and 50 hours the next, he must receive overtime compensation for the overtime hours worked beyond the applicable maximum in the second week, even though the average number of hours worked in the 2 weeks is 40. This is true regardless of whether the employee works on a standard or swing-shift schedule and regardless of whether he is paid on a daily, weekly, biweekly, monthly or other basis. The rule is also applicable to pieceworkers and employees paid on a commission basis. It is therefore necessary to determine the hours worked and the compensation earned by pieceworkers and commission employees on a weekly basis.

### § 778.105 - Determining the workweek.

An employee's workweek is a fixed and regularly recurring period of 168 hours - seven consecutive 24-hour periods. It need not coincide with the calendar week but may begin on any day and at any hour of the day. For purposes of computing pay due under the Fair Labor Standards Act, a single workweek may be established for a plant or other establishment as a whole or different workweeks may be established for different employees or groups of employees. Once the beginning time of an employee's workweek is established, it remains fixed regardless of the schedule of hours worked by him. The beginning of the workweek may be changed if the change is intended to be permanent and is not designed to evade the overtime requirements of the Act. The proper method of computing overtime pay in a period in which a change in the time of commencement of the workweek is made, is discussed in §§ 778.301 and 778.302.

### § 778.106 - Time of payment.

There is no requirement in the Act that overtime compensation be paid weekly. The general rule is that overtime compensation earned in a particular workweek must be paid on the regular pay day for the period in which such workweek ends. When the correct amount of overtime compensation cannot be determined until some time after the regular pay period, however, the requirements of the Act will be satisfied if the employer pays the excess overtime compensation as soon after the regular pay period as is practicable. Payment may not be delayed for a period longer than is reasonably necessary for the employer to compute and arrange for payment of the amount due and in no event may payment be delayed beyond the next payday after such computation can be made. Where retroactive wage increases are made, retroactive overtime compensation is due at the time the increase is paid, as discussed in § 778.303. For a discussion of overtime payments due because of increases by way of bonuses, see § 778.209.

### § 778.107 - General standard for overtime pay.

The general overtime pay standard in section 7(a) requires that overtime must be compensated at a rate not less than one and one-half times the regular rate at which the employee is actually employed. The regular rate of pay at which the employee is employed may in no event be less than the statutory minimum. (The statutory minimum is the specified minimum wage applicable under section 6 of the Act, except in the case of workers specially provided for in section 14 and workers in Puerto Rico, the Virgin Islands, and American Samoa who are covered by wage orders issued pursuant to section 8 of the Act.) If the employee's regular rate of pay is higher than the statutory minimum, his overtime compensation must be computed at a rate not less than one and one-half times such higher rate. Under certain conditions prescribed in section 7 (f), (g), and (j), the Act provides limited exceptions to the application of the general standard of section 7(a) for computing overtime pay based on the regular rate. With respect to these, see §§ 778.400 through 778.421 and 778.601 and part 548 of this chapter. The Act also provides, in section 7(b), (i), (k) and (m) and in section 13, certain partial and total exemptions from the application of section 7(a) to certain employees and under certain conditions. Regulations and interpretations concerning these exemptions are outside the scope of this part 778 and reference should be made to other applicable parts of this chapter.

### § 778.108 - The “regular rate”.

The “regular rate” of pay under the Act cannot be left to a declaration by the parties as to what is to be treated as the regular rate for an employee; it must be drawn from what happens under the employment contract (*Bay Ridge Operating Co.* v. *Aaron,* 334 U.S. 446). The Supreme Court has described it as the hourly rate actually paid the employee for the normal, nonovertime workweek for which he is employed - an “actual fact” (*Walling* v. *Youngerman-Reynolds Hardwood Co.,* 325 U.S. 419). Section 7(e) of the Act requires inclusion in the “regular rate” of “all remuneration for employment paid to, or on behalf of, the employee” except payments specifically excluded by paragraphs (1) through (7) of that subsection. (These seven types of payments, which are set forth in § 778.200 and discussed in §§ 778.201 through 778.224, are hereafter referred to as “statutory exclusions.”) As stated by the Supreme Court in the Youngerman-Reynolds case cited above: “Once the parties have decided upon the amount of wages and the mode of payment the determination of the regular rate becomes a matter of mathematical computation, the result of which is unaffected by any designation of a contrary ‘regular rate’ in the wage contracts.”

### § 778.109 - The regular rate is an hourly rate.

The “regular rate” under the Act is a rate per hour. The Act does not require employers to compensate employees on an hourly rate basis; their earnings may be determined on a piece-rate, salary, commission, or other basis, but in such case the overtime compensation due to employees must be computed on the basis of the hourly rate derived therefrom and, therefore, it is necessary to compute the regular hourly rate of such employees during each workweek, with certain statutory exceptions discussed in §§ 778.400 through 778.421. The regular hourly rate of pay of an employee is determined by dividing his total remuneration for employment (except statutory exclusions) in any workweek by the total number of hours actually worked by him in that workweek for which such compensation was paid. The following sections give some examples of the proper method of determining the regular rate of pay in particular instances: (The maximum hours standard used in these examples is 40 hours in a workweek).

### § 778.110 - Hourly rate employee.

(a) *Earnings at hourly rate exclusively.* If the employee is employed solely on the basis of a single hourly rate, the hourly rate is the “regular rate.” For overtime hours of work the employee must be paid, in addition to the straight time hourly earnings, a sum determined by multiplying one-half the hourly rate by the number of hours worked in excess of 40 in the week. Thus a $12 hourly rate will bring, for an employee who works 46 hours, a total weekly wage of $588 (46 hours at $12 plus 6 at $6). In other words, the employee is entitled to be paid an amount equal to $12 an hour for 40 hours and $18 an hour for the 6 hours of overtime, or a total of $588.

(b) *Hourly rate and bonus.* If the employee receives, in addition to the earnings computed at the $12 hourly rate, a production bonus of $46 for the week, the regular hourly rate of pay is $13 an hour (46 hours at $12 yields $552; the addition of the $46 bonus makes a total of $598; this total divided by 46 hours yields a regular rate of $13). The employee is then entitled to be paid a total wage of $637 for 46 hours (46 hours at $13 plus 6 hours at $6.50, or 40 hours at $13 plus 6 hours at $19.50).

### § 778.111 - Pieceworker.

(a) *Piece rates and supplements generally.* When an employee is employed on a piece-rate basis, the regular hourly rate of pay is computed by adding together total earnings for the workweek from piece rates and all other sources (such as production bonuses) and any sums paid for waiting time or other hours worked (except statutory exclusions). This sum is then divided by the number of hours worked in the week for which such compensation was paid, to yield the pieceworker's “regular rate” for that week. For overtime work the pieceworker is entitled to be paid, in addition to the total weekly earnings at this regular rate for all hours worked, a sum equivalent to one-half this regular rate of pay multiplied by the number of hours worked in excess of 40 in the week. (For an alternative method of complying with the overtime requirements of the Act as far as pieceworkers are concerned, *see* § 778.418.) Only additional half-time pay is required in such cases where the employee has already received straight-time compensation at piece rates or by supplementary payments for all hours worked. Thus, for example, if the employee has worked 50 hours and has earned $491 at piece rates for 46 hours of productive work and in addition has been compensated at $8.00 an hour for 4 hours of waiting time, the total compensation, $523.00, must be divided by the total hours of work, 50, to arrive at the regular hourly rate of pay - $10.46. For the 10 hours of overtime the employee is entitled to additional compensation of $52.30 (10 hours at $5.23). For the week's work the employee is thus entitled to a total of $575.30 (which is equivalent to 40 hours at $10.46 plus 10 overtime hours at $15.69).

(b) *Piece rates with minimum hourly guarantee.* In some cases an employee is hired on a piece-rate basis coupled with a minimum hourly guaranty. Where the total piece-rate earnings for the workweek fall short of the amount that would be earned for the total hours of work at the guaranteed rate, the employee is paid the difference. In such weeks the employee is in fact paid at an hourly rate and the minimum hourly guaranty is the regular rate in that week. In the example just given, if the employee was guaranteed $11 an hour for productive working time, the employee would be paid $506 (46 hours at $11) for the 46 hours of productive work (instead of the $491 earned at piece rates). In a week in which no waiting time was involved, the employee would be owed an additional $5.50 (half time) for each of the 6 overtime hours worked, to bring the total compensation up to $539 (46 hours at $11 plus 6 hours at $5.50 or 40 hours at $11 plus 6 hours at $16.50). If the employee is paid at a different rate for waiting time, the regular rate is the weighted average of the 2 hourly rates, as discussed in § 778.115.

### § 778.112 - Day rates and job rates.

If the employee is paid a flat sum for a day's work or for doing a particular job, without regard to the number of hours worked in the day or at the job, and if he receives no other form of compensation for services, his regular rate is determined by totaling all the sums received at such day rates or job rates in the workweek and dividing by the total hours actually worked. He is then entitled to extra half-time pay at this rate for all hours worked in excess of 40 in the workweek.

### § 778.113 - Salaried employees - general.

(a) *Weekly salary.* If the employee is employed solely on a weekly salary basis, the regular hourly rate of pay, on which time and a half must be paid, is computed by dividing the salary by the number of hours which the salary is intended to compensate. If an employee is hired at a salary of $350 and if it is understood that this salary is compensation for a regular workweek of 35 hours, the employee's regular rate of pay is $350 divided by 35 hours, or $10 an hour, and when the employee works overtime the employee is entitled to receive $10 for each of the first 40 hours and $15 (one and one-half times $10) for each hour thereafter. If an employee is hired at a salary of $375 for a 40-hour week the regular rate is $9.38 an hour.

(b) *Salary for periods other than workweek.* Where the salary covers a period longer than a workweek, such as a month, it must be reduced to its workweek equivalent. A monthly salary is subject to translation to its equivalent weekly wage by multiplying by 12 (the number of months) and dividing by 52 (the number of weeks). A semimonthly salary is translated into its equivalent weekly wage by multiplying by 24 and dividing by 52. Once the weekly wage is arrived at, the regular hourly rate of pay will be calculated as indicated above. The regular rate of an employee who is paid a regular monthly salary of $1,560, or a regular semimonthly salary of $780 for 40 hours a week, is thus found to be $9 per hour. Under regulations of the Administrator, pursuant to the authority given to him in section 7(g)(3) of the Act, the parties may provide that the regular rates shall be determined by dividing the monthly salary by the number of working days in the month and then by the number of hours of the normal or regular workday. Of course, the resultant rate in such a case must not be less than the statutory minimum wage.

### § 778.114 - Fluctuating Workweek Method of Computing Overtime.

(a) An employer may use the fluctuating workweek method to properly compute overtime compensation based on the regular rate for a nonexempt employee under the following circumstances:

(1) The employee works hours that fluctuate from week to week;

(2) The employee receives a fixed salary that does not vary with the number of hours worked in the workweek, whether few or many;

(3) The amount of the employee's fixed salary is sufficient to provide compensation to the employee at a rate not less than the applicable minimum wage rate for every hour worked in those workweeks in which the number of hours the employee works is greatest;

(4) The employee and the employer have a clear and mutual understanding that the fixed salary is compensation (apart from overtime premiums and any bonuses, premium payments, commissions, hazard pay, or other additional pay of any kind not excludable from the regular rate under section 7(e)(l) through (8) of the Act) for the total hours worked each workweek regardless of the number of hours, although the clear and mutual understanding does not need to extend to the specific method used to calculate overtime pay; and

(5) The employee receives overtime compensation, in addition to such fixed salary and any bonuses, premium payments, commissions, hazard pay, and additional pay of any kind, for all overtime hours worked at a rate of not less than one-half the employee's regular rate of pay for that workweek. Since the salary is fixed, the regular rate of the employee will vary from week to week and is determined by dividing the amount of the salary and any non-excludable additional pay received each workweek by the number of hours worked in the workweek. Payment for overtime hours at not less than one-half such rate satisfies the overtime pay requirement because such hours have already been compensated at the straight time rate by payment of the fixed salary and non-excludable additional pay. Payment of any bonuses, premium payments, commissions, hazard pay, and additional pay of any kind is compatible with the fluctuating workweek method of overtime payment, and such payments must be included in the calculation of the regular rate unless excludable under section 7(e)(1) through (8) of the Act.

(b) The application of the principles stated above may be illustrated by the case of an employee whose hours of work do not customarily follow a regular schedule but vary from week to week, whose work hours never exceed 50 hours in a workweek, and whose salary of $600 a week is paid with the understanding that it constitutes the employee's compensation (apart from overtime premiums and any bonuses, premium payments, commissions, hazard pay, or other additional pay of any kind not excludable from the regular rate under section 7(e)(1) through (8)) for all hours worked in the workweek.

(1) *Example.* If during the course of 4 weeks this employee receives no additional compensation and works 37.5, 44, 50, and 48 hours, the regular rate of pay in each of these weeks is $16, $13.64, $12, and $12.50, respectively. Since the employee has already received straight time compensation for all hours worked in these weeks, only additional half-time pay is due for overtime hours. For the first week the employee is owed $600 (fixed salary of $600, with no overtime hours); for the second week $627.28 (fixed salary of $600, and 4 hours of overtime pay at one-half times the regular rate of $13.64 for a total overtime payment of $27.28); for the third week $660 (fixed salary of $600, and 10 hours of overtime pay at one-half times the regular rate of $12 for a total overtime payment of $60); for the fourth week $650 (fixed salary of $600, and 8 overtime hours at one-half times the regular rate of $12.50 for a total overtime payment of $50).

(2) *Example.* If during the course of 2 weeks this employee works 37.5 and 48 hours and 4 of the hours the employee worked each week were nightshift hours compensated at a premium rate of an extra $5 per hour, the employee's total straight time earnings would be $620 (fixed salary of $600 plus $20 of premium pay for the 4 nightshift hours). In this case, the regular rate of pay in each of these weeks is $16.53 and $12.92, respectively, and the employee's total compensation would be calculated as follows: For the 37.5 hour week the employee is owed $620 (fixed salary of $600 plus $20 of non-overtime premium pay, with no overtime hours); and for the 48 hour week $671.68 (fixed salary of $600 plus $20 of non-overtime premium pay, and 8 hours of overtime at one-half times the regular rate of $12.92 for a total overtime payment of $51.68). This principle applies in the same manner regardless of the reason for the hourly premium rate (e.g., weekend hours).

(3) *Example.* If during the course of 2 weeks this employee works 37.5 and 48 hours and the employee received a $100 productivity bonus each week, the employee's total straight time earnings would be $700 (fixed salary of $600 plus $100 productivity bonus). In this case, the regular rate of pay in each of these weeks is $18.67 and $14.58, respectively, and the employee's total compensation would be calculated as follows: For the 37.5 hour week the employee is owed $700 (fixed salary of $600 plus $100 productivity bonus, with no overtime hours); and for the 48 hour week $758.32 (fixed salary of $600 plus $100 productivity bonus, and 8 hours of overtime at one-half times the regular rate of $14.58 for a total overtime payment of $58.32).

(c) Typically, such fixed salaries are paid to employees who do not customarily work a regular schedule of hours and are in amounts agreed on by the parties as adequate compensation for long workweeks as well as short ones, under the circumstances of the employment as a whole. Where the conditions for the use of the fluctuating workweek method of overtime payment are present, the Act, in requiring that “not less than” the prescribed premium of 50 percent for overtime hours worked be paid, does not prohibit paying more. On the other hand, where all the facts indicate that an employee is being paid for overtime hours at a rate no greater than that which the employee receives for nonovertime hours, compliance with the Act cannot be rested on any application of the fluctuating workweek overtime formula.

(d) The fixed salary described in paragraph (a) of this section does not vary with the number of hours worked in the workweek, whether few or many. However, employers using the fluctuating workweek method of overtime payment may take occasional disciplinary deductions from the employee's salary for willful absences or tardiness or for infractions of major work rules, provided that the deductions do not cut into the minimum wage or overtime pay required by the Act.

### § 778.115 - Employees working at two or more rates.

Where an employee in a single workweek works at two or more different types of work for which different nonovertime rates of pay (of not less than the applicable minimum wage) have been established, his regular rate for that week is the weighted average of such rates. That is, his total earnings (except statutory exclusions) are computed to include his compensation during the workweek from all such rates, and are then divided by the total number of hours worked at all jobs. Certain statutory exceptions permitting alternative methods of computing overtime pay in such cases are discussed in §§ 778.400 and 778.415 through 778.421.

### § 778.116 - Payments other than cash.

Where payments are made to employees in the form of goods or facilities which are regarded as part of wages, the reasonable cost to the employer or the fair value of such goods or of furnishing such facilities must be included in the regular rate. (See part 531 of this chapter for a discussion as to the inclusion of goods and facilities in wages and the method of determining reasonable cost.) Where, for example, an employer furnishes lodging to his employees in addition to cash wages the reasonable cost or the fair value of the lodging (per week) must be added to the cash wages before the regular rate is determined.

### § 778.117 - Commission payments - general.

Commissions (whether based on a percentage of total sales or of sales in excess of a specified amount, or on some other formula) are payments for hours worked and must be included in the regular rate. This is true regardless of whether the commission is the sole source of the employee's compensation or is paid in addition to a guaranteed salary or hourly rate, or on some other basis, and regardless of the method, frequency, or regularity of computing, allocating and paying the commission. It does not matter whether the commission earnings are computed daily, weekly, biweekly, semimonthly, monthly, or at some other interval. The fact that the commission is paid on a basis other than weekly, and that payment is delayed for a time past the employee's normal pay day or pay period, does not excuse the employer from including this payment in the employee's regular rate.

### § 778.118 - Commission paid on a workweek basis.

When the commission is paid on a weekly basis, it is added to the employee's other earnings for that workweek (except overtime premiums and other payments excluded as provided in section 7(e) of the Act), and the total is divided by the total number of hours worked in the workweek to obtain the employee's regular hourly rate for the particular workweek. The employee must then be paid extra compensation at one-half of that rate for each hour worked in excess of the applicable maximum hours standard.

### § 778.119 - Deferred commission payments - general rules.

If the calculation and payment of the commission cannot be completed until sometime after the regular pay day for the workweek, the employer may disregard the commission in computing the regular hourly rate until the amount of commission can be ascertained. Until that is done he may pay compensation for overtime at a rate not less than one and one-half times the hourly rate paid the employee, exclusive of the commission. When the commission can be computed and paid, additional overtime compensation due by reason of the inclusion of the commission in the employee's regular rate must also be paid. To compute this additional overtime compensation, it is necessary, as a general rule, that the commission be apportioned back over the workweeks of the period during which it was earned. The employee must then receive additional overtime compensation for each week during the period in which he worked in excess of the applicable maximum hours standard. The additional compensation for that workweek must be not less than one-half of the increase in the hourly rate of pay attributable to the commission for that week multipled by the number of hours worked in excess of the applicable maximum hours standard in that workweek.

### § 778.120 - Deferred commission payments not identifiable as earned in particular workweeks.

If it is not possible or practicable to allocate the commission among the workweeks of the period in proportion to the amount of commission actually earned or reasonably presumed to be earned each week, some other reasonable and equitable method must be adopted. The following methods may be used:

(a) *Allocation of equal amounts to each week.* Assume that the employee earned an equal amount of commission in each week of the commission computation period and compute any additional overtime compensation due on this amount. This may be done as follows:

(1) For a commission computation period of 1 month, multiply the commission payment by 12 and divide by 52 to get the amount of commission allocable to a single week. If there is a semimonthly computation period, multiply the commission payment by 24 and divide by 52 to get each week's commission. For a commission computation period of a specific number of workweeks, such as every 4 weeks (as distinguished from every month) divide the total amount of commission by the number of weeks for which it represents additional compensation to get the amount of commission allocable to each week.

(2) Once the amount of commission allocable to a workweek has been ascertained for each week in which overtime was worked, the commission for that week is divided by the total number of hours worked in that week, to get the increase in the hourly rate. Additional overtime due is computed by multiplying one-half of this figure by the number of overtime hours worked in the week. A shorter method of obtaining the amount of additional overtime compensation due is to multiply the amount of commission allocable to the week by the decimal equivalent of the fraction

(ii) An employee received $384 in commissions for a 4-week period. Dividing this by 4 gives him a weekly increase of $96. Assume that he is due overtime compensation after 40 hours and that in the 4-week period he worked 44, 40, 44 and 48 hours. He would be due additional compensation of $4.36 for the first and third week ($96 ÷ 44 = $2.18 ÷ 2 = $1.09 × 4 overtime hours = $4.36), no extra compensation for the second week during which no overtime hours were worked, and $8 for the fourth week, computed in the same manner as weeks one and three. The additional overtime pay due may also be computed by multiplying the amount of the weekly increase by the appropriate decimal on the coefficient table, for each week in which overtime was worked.

(b) *Allocation of equal amounts to each hour worked.* Sometimes, there are facts which make it inappropriate to assume equal commission earnings for each workweek. For example, the number of hours worked each week may vary significantly. In such cases, rather than following the method outlined in paragraph (a) of this section, it is reasonable to assume that the employee earned an equal amount of commission in each hour that he worked during the commission computation period. The amount of the commission payment should be divided by the number of hours worked in the period in order to determine the amount of the increase in the regular rate allocable to the commission payment. One-half of this figure should be multiplied by the number of statutory overtime hours worked by the employee in the overtime workweeks of the commission computation period, to get the amount of additional overtime compensation due for this period.

*i.e.,*two workweeks of 48 hours each). Dividing the $192 by 96 gives a $2 increase in the hourly rate. If the employee is entitled to overtime after 40 hours in a workweek, he is due an additional $16 for the commission computation period, representing an additional $1 for each of the 16 overtime hours.

### § 778.121 - Commission payments - delayed credits and debits.

If there are delays in crediting sales or debiting returns or allowances which affect the computation of commissions, the amounts paid to the employee for the computation period will be accepted as the total commission earnings of the employee during such period, and the commission may be allocated over the period from the last commission computation date to the present commission computation date, even though there may be credits or debits resulting from work which actually occurred during a previous period. The hourly increase resulting from the commission may be computed as outlined in the preceding paragraphs.