We are called upon here to interpret the meaning of the phrase 'irregular hours of work' contained in Section 7(e) of the Fair Labor Standards Act of 1938.1 Our interpretation will determine the validity of a number of individual wage contracts between defendant and certain of its employees.

The Fair Labor Standards Act is a major enactment by Congress of social and economic policy, intended to protect certain groups of the population from substandard wages and excessive hours which endanger the national health and well-being and free flow of goods in interstate commerce. See Brooklyn Sav. Bank v. O'Neil, 324 U.S. 697, 706, 65 S. Ct. 895, 902, 89 L. Ed. 1296 (1945). Section 7(a) of the Act2 prescribes a maximum workweek of forty hours for an employee engaged in commerce unless the employee is paid at the rate of one and one-half times the regular rate for hours worked over forty. As the result of two decisions of the United States Supreme Court, Walling v. A.H. Belo Corporation, 316 U.S. 624, 62 S. Ct. 1223, 86 L. Ed. 1716 (1942), and Walling v. Halliburton Oil Well Cementing Co., 331 U.S. 17, 67 S. Ct. 1056, 91 L. Ed. 1312 (1947), Congress in 1949 amended the Act by adding Section 7(e) to give statutory recognition to the principles in those decisions.3

Section 7(e), commonly known as the 'Belo' provision, provides an exception to the regular forty-hour maximum workweek where the employee is engaged in 'irregular hours of work.' Under this subsection the employer is deemed not to have violated the provisions of Section 7(a) by employing any employee for a workweek in excess of forty hours, if the employee is hired pursuant to a bona fide individual contract and his duties necessitate 'irregular hours of work,' and the contract (1) specifies a regular rate of pay not less than the minimum hourly rate provided in the Act and compensation of not less than one and one-half times such rate for all hours worked in excess of forty in any workweek, and (2) provides a weekly guarantee of pay for not more than sixty hours based on the rates so specified.

On June 18, 1963, the district court enjoined Foremost Dairies, Inc., a large milk processor and ice-cream manufacturer, from violating the minimum wage, overtime and record-keeping provisions of the Act. Thereafter, on September 4, 1964, Home Town Foods, Inc. purchased substantially all the assets and operations of Foremost and is, therefore, its successor. Inspections of Home Town plants by representatives of the Wage and Hour Division resulted in the charge that Home Town was not complying with Section 7(a) of the Act in connection with payment to certain employees of a guaranteed weekly wage. This meant, in effect, that the Secretary did not agree that Home Town's so-called Section 7(e) Belo contracts with these employees were valid because the employees' hours of work were not irregular within the contemplation of the subsection, since they fluctuated only in overtime (i.e., over forty hours per week) and did not fluctuate in straight time below forty hours per workweek. On July 17, 1965, Home Town petitioned the district court to reopen the injunction proceedings in order to amend the judgment so that the company would not be denied the right to pay its employees pursuant to guaranteed weekly wage plans as authorized by Section 7(e) of the Act. The Secretary responded and petitioned the court for an adjudication of civil contempt.

After a hearing the district court held Home Town in civil contempt of the injunction, ordered it to pay fines in the sum of $1,888.65 and back pay of $8,819.16 to the employees involved, all of whom were employed under so-called Section 7(e) Belo contracts. In well-considered, detailed reasons for judgment, the district judge found that all of the Section 7(e) employees worked a minimum of forty hours a week or more, and that Home Town had failed to satisfy its burden of proof4 that the duties of these employees necessitated 'irregular hours of work' within the meaning of Section 7(e) of the Act. The court held that the duties of none of these employees fluctuated within the range of hours in the Belo and Halliburton cases,5 and that all of these employees have by reason of custom, practice or policy worked at least a regular minimum schedule of weekly hours except for absences due to vacations, holidays, illness or personal reasons. The court found that many of the instances of hours worked above the employees' regular minimum schedules were attributable to vacation and similar relief of other employees, predictable, seasonal and periodic work loads, and occasional short periods at the end of regular work days. We affirm.

There is no contest about the sufficiency in form of the separate Home Town employee (Belo) contracts providing a guaranteed weekly wage or that the rate of pay in the contracts provided overtime pay of one and one-half times the agreed hourly rate for a specified number of hours in excess of forty but less than sixty per week. In this case the specified hours for different employees varied, being forty-eight, fifty, fifty-two or fifty-four hours per week. It is not disputed that each of the employees involved worked mimimum regular weekly schedules of forty hours or more each week. The fluctuations, therefore, were all in overtime hours in the range above forty hours per week. The serious issue presented for decision concerns the validity of the Belo contracts. If the contracts are void, the employees were not paid proper overtime compensation as required by the basic overtime standards of Section 7(a).

Home Town contends that the fluctuation in employees' working hours was necessitated by their duties involving unpredictable exigencies and unpredictable hours and that these fluctuations, though they occurred only in overtime hours, constituted 'irregular hours of work' within the meaning of Section 7(e) of the Act. The company states that guaranteed wage contracts were used by it to minimize the variations in weekly pay to which these employees would be subject if paid on a regular hourly basis without any guarantee. It argues that Section 7(e) is concerned solely with eliminating or minimizing variations in overtime pay caused by irregular overtime hours and that the purpose of Section 7(e) is to afford stability of income which would not be possible under a regular hourly rate of pay; that the Secretary is attempting administratively to prevent effective use of Belo contracts and thus abrogate Section 7(e).

The Secretary contends that Section 7(e) was not intended to apply to employees who regularly work a minimum schedule of hours equal to or exceeding the statutory workweek standard of forty hours where the only irregularity is in the overtime hours worked. He states that since eacy employee works a minimum of forty hours or more each week, he thus has the necessary workweek security referred to in the Belo case and the guaranteed weekly salary does no more.6

The Secretary's Interpretative Bulletin, 29 C.F.R. 778.406, provides that Belo contracts lack the irregularity of hours required by Section 7(e) where the employment hours fluctuate only in the overtime range above the maximum forty-hour workweek prescribed by the statute.7

The Secretary states that historically his interpretation dates back to 1950 and his first bulletin interpreting the 1949 amendments, which contained the following provision:

'The type of employment agreement permitted under section 7(e) can be made only with (or by his representatives on behalf of) an employee whose 'duties * * * necessitate irregular hours of work.' It is clear that no contract made with an employee who works a regularly scheduled workweek or whose schedule involves alternating fixed workweeks will qualify under this subsection. * * *' (Feb. 4, 1950, Fed. Register p. 637, 778.18(b)) The Secretary further states: 'This provision has been consistently continued in the successive reprints and amended Interpretative Bulletins through the most recent one issued February 2, 1965 (Fed. Reg. 778.405). Since, as found by the trial court, all of the employees here involved 'have regularly worked minimum daily and weekly schedules * * *' * * *, the above-quoted interpretation-- which dates back to the first year after enactment of Section 7(e), and has been consistently maintained since-- would, without more, operate to exclude the application of Section 7(e). 'The more specific position that the irregularity of hours requirement is not met in cases where the employee's hours fluctuate only in the overtime range-- which, in effect, is no more than an elaboration of the earlier more general interpretation-- was expressly enunciated by the Secretary in 1958 shortly after the decision in Trager v. J.E. Plastics Mfg. Co., decided February 27, 1958 * * *. As appears in the opinion in Mitchell (Secretary of Labor) v. Independent Stave Co., 168 F. Supp. 830, at 832 (W.D.Mo., September 22, 1958), the Secretary at that trial advanced this position in reliance on the Trager decision. The Secretary also took this specific position in the Winn-Dixie and Midland Finance cases (decided in September 1962 and June 1963, respectively). The courts in the latter two cases approved and adopted this specific interpretation * * *.'8

The Opinion Letter of the Wage-Hour Administrator dated March 7, 1962, CCH Labor Law Reporter 30,617, holds that a Belo contract guaranteeing weekly pay is invalid if the fluctuations in weekly hours occurred only occasionally, if the fluctuations are only in the number of overtime hours worked, or if fluctuations below forty hours a week are not substantial.9

We are, of course, not bound by interpretative bulletins or administrative opinions. However, the Supreme Court said in Overnight Motor Transp. Co. v. Missel, 316 U.S. 572, 580, 62 S. Ct. 1216, 86 L. Ed. 1682 (1942): 'While the interpretative bulletins are not issued as regulations under statutory authority, they do carry persuasiveness as an expression of the view of those experienced in the administration of the Act and acting with the advice of a staff specializing in its interpretation and application.' In Skidmore v. Swift & Co., 323 U.S. 134, 140, 65 S. Ct. 161, 164, 89 L. Ed. 124 (1944), the Supreme Court further held: 'We consider that the rulings, interpretations and opinions of the Administrator under this Act (Fair Labor Standards Act), while not controlling upon the courts by reason of their authority, do constitute a body of experience and informed judgment to which courts and litigants may properly resort for guidance. The weight of such a judgment in a particular case will depend upon the thoroughness evident in its consideration, the validity of its reasoning, its consistency with earlier and later pronouncements, and all those factors which give it power to persuade, if lacking power to control.'

Several district court decisions have passed on the below forty-hour fluctuation requirement as interpreted by the Secretary. In Goldberg v. Winn-Dixie Stores, Inc., 1962, S.D.Fla., 46 L.C. P31,334 (15 W.H.Cases 641), in a case where all of defendant's employees under Belo contracts worked regularly at least forty hours per week, the court (Simpson, J.) held that these employees had the necessary workweek security without a guaranteed weekly salary, and that the phrase 'irregular hours of work' would not include a situation where the irregular hours involved only overtime work, in excess of forty hours a week. The court cited Trager v. J.E. Plastics Mfg. Corp., 1958, S.D.N.Y., 34 L.C. P71,320 (13 W.H.Cases 621), in support of its holding. In Trager, the employee involved worked regularly at least forty hours a week and only the amount of his overtime hours varied. The court held:

'In the absence of satisfactory proof indicating that in some workweeks plaintiff worked less than the statutory minimum of 40 hours, the provision of Section 7(e) providing that 'the duties of such employee necessitate irregular hours of work', is not met by proof indicating 'irregularity' in his overtime hours for a portion of the year.'10

In Wirtz v. Midland Finance Co., 1963, M.D.Ga., 48 L.C. P31,473 (16 W.H.Cases 141), the court found that all of the Belo employees involved worked considerably more hours than forty in the usual workweek and, therefore, that the Section 7(e) contracts were invalid. It held:

'The requirement contained in 7(e) of the Act that the 'duties of such employee necessitate irregular hours of work * * *' is not satisfied in a situation where the irregular hours involve only overtime work in excess of 40 hours per week and do not involve straight time hours. Since there is no evidence of any irregularity or fluctuation of straight time hours worked we find that the employees claimed to have been employed by the Defendants pursuant to the provisions of 7(e) of the Act do not validly come within the exemption provided by that Section.'11

We hold that the Secretary's interpretation of Section 7(e), 29 C.F.R. 778.406, is a valid and reasonable interpretation of the meaning of Section 7(e) of the Act. It is a restatement of the Belo principles and is well supported by the antecedent judicial and legislative history. It is based on sound, realistic principles for any other construction of the subsection would seriously challenge the effectiveness of Section 7(a) of the Act which prescribes a statutory maximum workweek with overtime compensation for hours in excess thereof. We do not, by this holding, minimize the propriety of valid Section 7(e) contracts. However, when logically applied, appellant's contention that the fluctuation in the workweek hours need occur only in overtime hours would make it rather easy to substitute Section 7(e) contracts for virtually all employees and thereby strike at a vital provision of the Act, Section 7(a).12

If the fluctation of hours in average workweeks varies only in overtime hours, there is not such irregularity of hours, in our view, as would justify our holding that individual employment contracts under Section 7(e) are valid. Where employees regularly work at least the maximum number of hours per workweek permitted without overtime pay being due under Section 7(a), and any irregularity of fluctuation in workweek hours occurs only in hours over the maximum, in overtime hours, such fluctuation does not constitute 'irregular hours of work' and Belo contracts with such employees are invalid under Section 7(e).

Section 7(e) is silent on the degree of fluctuation required, and the phrase 'irregular hours of work' is undefined. However, we must give an interpretation to the section which would give effect to the central purpose of the statute itself. See Florida Citrus Exchange v. Folsom, 5 Cir., 1957, 246 F.2d 850, reversed, Fleming v. Florida Citrus Exch., 358 U.S. 153, 79 S. Ct. 160, 3 L. Ed. 2d 188 (1958). This is eloquently expressed in the Act itself, Section 2 (29 U.S.C. 202), in which Congress declared 'that the existence, in industries engaged in commerce * * * of labor conditions detrimental to the maintenance of the minimum standard of living necessary for health, efficiency, and general well-being of workers (1) causes commerce and the channel and instrumentalities of commerce to be used to spread and perpetuate such labor conditions among the workers of the several States; * * *.'

Affirmed.