TUTTLE, Circuit Judge:
This is an appeal from a judgment for the plaintiffs in a class action Title VII employment discrimination suit. We affirm part [372]*372of the trial court’s decision and remand the rest for further proceedings.
This class action, filed originally by Mariano S. Falcon, a Mexican-American, challenged the hiring and promotion practices of the defendant employer, General Telephone Company of the Southwest (General), on the ground that General impermissibly discriminated on the basis of national origin against Mexican-Americans (Spanish speaking Americans).1 Falcon applied for a job with General in July of 1969. He was hired as part of an affirmative action program, and after a training period, he began work as a groundman. After one month, he was promoted to lineman and a short time later, he was promoted to lineman in charge. One year after he was hired, he turned down a promotion to installer-repairman, and he did not receive any other promotion prior to October, 1972, at which time he applied for a promotion to Field Inspector. He did not receive this promotion although several other non-Mexican-Americans with less seniority than Falcon received the promotion. Falcon then filed a complaint with the Equal Employment Opportunity Commission (EEOC) charging that General discriminated in the area of promotions.2 He filed suit in early 1975, challenging both the hiring and promotion policies of General in a class action suit. The trial court certified the class, but limited the class to those Mexican-American employees who had applied for employment or were employed in General’s Irving, Texas division.
At Phase I of the trial,3 the district court decided that General had discriminated against the plaintiff with respect to promotion, but not with respect to hiring, and that General had discriminated against the other members of the class with respect to hiring, but not with respect to promotions. The court apparently based its finding of discriminatory hiring on statistics, introduced by the plaintiff, which indicated that Mexican-Americans represented 5.24% of the work force in the Dallas/Fort Worth area, the relevant area for Irving, while only 1.22% of General’s employees in 1972 were Mexican-American. The trial court also relied on the fact that 20 Caucasians were hired in 1972, as opposed to no Mexican-Americans, and that in 1973, only 4% of [373]*373those hired were Mexican-American.4 See note 16 infra.
With respect to hiring at Phase I, there was testimony that General had a policy of keeping all applications active for only three months. The court found that none of the applicants were informed of this time limit, that the applicants were not informed as to what positions were open, and that they were not informed as to the qualifications for any of these positions. Thus, General was given the burden of proving at Phase II that there had not been any job openings for which the class members had been qualified after the three month period.5
As stated previously, the trial court also decided that Falcon was discriminated against in promotions. The court based its decision there on its finding that General’s preferred reasons for promoting the other men, rather than Falcon, were insufficient and subjective. Therefore in Phase I, as a preliminary part of its relief order, the court ordered the defendant to take numerous affirmative action steps and the judge held that the plaintiff and the class were entitled to attorney’s fees.
At Phase II of the trial, the court ruled that General had not met its burden of proving that there had been no available openings for the class applicants who wished to be hired after the three month “active” application period. All 13 class members therefore received back pay awards and job security awards to compensate them for the fact that if they had been hired by General, they would have been in a union. The judge also awarded attorney’s fees to the plaintiff and class.
Both sides appeal from this judgment. The appellant, General, bases its appeal on a number of issues. It argues that:
(a) The trial court erred in certifying the class;
(b) The trial court did not have jurisdiction over the discriminatory hiring claim since the EEOC charge related solely to a discriminatory promotion policy claim;
(c) The trial court erred in finding that the plaintiff below had been discriminated against with respect to promotion;
(d) The trial court erred in finding that the defendant below had discriminated against the class with respect to hiring;
(e) The trial court erred in admitting reports from the General Services Administration (GSA);
(f) The trial court erred in making back pay awards without sufficient evidence that job openings existed for which the class members were qualified;
(g) The trial court erred in finding the application procedure unreasonable;
(h) The trial court awarded too much in back pay;
(i) The trial court awarded too much in attorney’s fees.
The appellee, Falcon, argues that:
[374]*374(a) The trial court erred in limiting the class to those employed in the Irving division;
(b) The trial court awarded too little in back pay.
We shall examine each of these issues in the approximate order they were raised at trial.
I. Class Certification
The appellant argues that under Rule 23, the trial court erred in certifying the class at all. On his cross-appeal, Falcon claims that the only error involved in the certification was the trial judge’s limiting of the class to Mexican-Americans who are employed at or have applied to the Irving division of General, rather than all of the divisions. Wé shall examine each of those issues in turn.
The appellant bases its argument on three theories. It says the claim of the class representative was not typical of the claims of the class; that the class representative could not fairly and adequately protect the interests of the class, and that the questions of law and fact raised by the claims of the class representative were not common to the questions of law and fact raised by the claims of the class. General also argues that the failure of the trial court to hold an evidentiary hearing on this matter may, in itself, require a reversal of certification.
A. Failure to Hold a Hearing
General alleges that the failure to hold an evidentiary hearing on the issue of certification requires reversal of the certification, citing Satterwhite v. City of Greenville, 578 F.2d 987 (5th Cir. 1978) (en banc), vac. and remanded, 445 U.S. 940, 100 S.Ct. 1334, 63 L.Ed.2d 773 (1980). Falcon says, in opposition, that such a hearing was not necessary.
We disagree with General’s contention that the failure to hold such a hearing, in itself, requires a reversal of certification. It is true that this Court has repeatedly stressed the importance and value of such an evidentiary hearing on the certification issue. Satterwhite v. City of Greenville, 578 F.2d 987, 998 (5th Cir. 1978) (en banc), vac. and remanded on other grounds, 445 U.S. 940, 100 S.Ct. 1334, 63 L.Ed.2d 773 (1980); King v. Gulf Oil Co., 581 F.2d 1184, 1186-87 (5th Cir. 1978); Huff v. N.D. Cass Co. of Alabama, 485 F.2d 710 (5th Cir. 1973). But such a hearing is important only in the context of showing whether or not a class should have been certified. If later evidence shows the decision to certify to have been a correct one, there was obviously no need to have held such a hearing. King at 1186-87. To prevail solely on a contention that a hearing was required, an appellant must show that if a hearing had been held, it could have affected his rights substantially. That can only occur in a situation in which the district court made a decision to deny certification without a hearing, since it is only in that case that a party can show that there was a substantial issue as to certification and that he was denied an effective opportunity to litigate it. We therefore hold that the mere fact that a class has been certified without a hearing is not a ground for reversal of that decision. Even when no hearing is held before certification is granted, a party has an adequate opportunity later to argue the substantive merits of the decision to certify. We therefore turn to the merits of General’s arguments concerning certification.
B. Appellant’s Substantive Class Certification
Although the appellant argues that the class did not meet three of the requirements of Rule 23(a)6, most of these claims are based on the appellant’s contention that Falcon, who was complaining of discrimina[375]*375tion with respect to promotion, could not represent a class complaining of discrimination with respect to hiring. General maintains that according to East Texas Motor Freight System, Inc. v. Rodriguez, 431 U.S. 395, 97 S.Ct. 1891, 52 L.Ed.2d 453 (1977), Falcon cannot represent both hiring and promotional discriminatees because he has not established a sufficient nexus between his claims of promotional discrimination and the other class members’ claims of hiring discrimination. See also Scott v. University of Delaware, 601 F.2d 76 (3rd Cir.), cert. denied 444 U.S. 931, 100 S.Ct. 275, 62 L.Ed.2d 189 (1979); Hill v. Western Electric Co., Inc., 596 F.2d 99 (4th Cir.), cert. denied 444 U.S. 929, 100 S.Ct. 271, 62 L.Ed.2d 186 (1979).
In contrast, Falcon argues that this Court has not interpreted the nexus requirement of East Texas Motor Freight as restrictively as other courts and that, therefore, this action was properly certified under this Court’s standards. See Payne v. Travenol Laboratories, Inc., 565 F.2d 895 (5th Cir.), cert. denied 439 U.S. 835, 99 S.Ct. 118, 58 L.Ed.2d 131 (1978); Vuyanich v. Republic National Bank of Dallas, 82 F.R.D. 420 (N.D.Tex.1979); Satterwhite v. City of Greenville, 578 F.2d 987 (5th Cir. 1978) (en banc), vac. and remanded 445 U.S. 940, 100 S.Ct. 1334, 63 L.Ed.2d 773 (1980). Falcon’s position is essentially that this Court still permits “across the board” attacks on discrimination.
We agree. In Payne v. Travenol Laboratories, Inc.; supra, this Court said:
Plaintiffs’ action is an “across the board” attack on unequal employment practices alleged to have been committed by Travenol pursuant to a policy of racial discrimination. As parties who have allegedly been aggrieved by some of these discriminatory practices, plaintiffs have demonstrated a sufficient nexus to enable them to represent other class members suffering from different practices motivated by the same policies. (Citations omitted)7
It is therefore apparent that this Court permits an employee complaining of one employment practice to represent another complaining of another practice, if the plaintiff and the members of the class suffer from essentially the same injury. In this case, all of the claims are based on discrimination because of national origin. It is consistent with the holding in Rodriguez and the policy of Title VII to allow a plaintiff to represent a class suffering from a common discriminatory complaint. While similarities of sex, race or national origin claims are not dispositive in favor of finding that the prerequisites of Rule 23 have been met, they are an extremely important factor in the determination, that can outweigh the fact that the members of the plaintiff class may be complaining about somewhat different specific discriminatory practices. See also Quigley v. Braniff Airways, Inc., 85 F.R.D. 74, 78-79 (N.D.Tex.1979); Cooper v. University of Texas at Dallas, 482 F.Supp. 187, 192 (N.D.Tex.1979). In addition here, the plaintiff showed more than an alliance based simply on the same type of discriminatory claim. He also [376]*376showed a similarity of interests based on job location, job function and other considerations. Cf. Crawford v. Western Electric Co., Inc., 614 F.2d 1300, 1304 (5th Cir. 1980).
Given our finding of a sufficient nexus between the plaintiffs’ claims and those of the class, we find that the requirements of Rule 23 were satisfied.8 See note 6. We therefore hold that the trial court acted correctly when it certified Falcon’s claim on behalf of these other plaintiffs.9
C. Appellee’s Class Certification Claim
On cross-appeal, the appellee contends that the trial court erred in refusing to extend the class to all Mexican-American employees who were employed by or had applied to any of General’s divisions, not just the one at Irving. He contends that since he worked in all of the towns in the Fort Worth, Texas area, and not only in the Irving division, he can properly represent the larger unit.
We find that the district court acted within its discretion in limiting the class to the Irving location, especially since the various General divisions each conduct their own hiring. In addition, management of such a large class would be much more difficult. Cf. Hill v. American Airlines, Inc., 479 F.2d 1057 (5th Cir. 1973).
II. Jurisdiction to Hear the Claim
The appellant argues here that the trial court did not have jurisdiction over the claim of hiring discrimination because the EEOC charge referred only to discrimination with respect to promotion. Relying on the opinions in United Airlines, Inc. v. Evans, 431 U.S. 553, 97 S.Ct. 1885, 52 L.Ed.2d 571 (1977) and McArthur v. Southern Airways, Inc., 569 F.2d 276 (5th Cir. 1978), General maintains that this Court’s holding in Sanchez v. Standard Brands, Inc., 431 F.2d 455 (5th Cir. 1970), that a court could take jurisdiction of claims which are “reasonably” related to the EEOC charge, must be reexamined. The Company also argues that the EEOC investigation and determination concerning hiring were beyond its jurisdiction.
In Sanchez, this Court said:
[T]he civil action is much more intimately related to the EEOC investigation than to the words of the charge which originally triggered the investigation. Within this statutory scheme, it is only logical to limit the permissible scope of the civil action to the scope of the EEOC investigation which can reasonably be expected to grow out of the charge of discrimination.
431 F.2d at 466. Thus in Sanchez, this Court endorsed a liberal standard for requirements relating to the relationship between the charge, the investigation, and a civil suit.
The two cases cited by the appellant do not question this standard. In United Airlines, Inc. v. Evans, 431 U.S. 553, 97 S.Ct. 1885, 52 L.Ed.2d 571 (1977), the Supreme Court held that a stewardess who had failed to complain of her discriminatory discharge was barred from later contending that she [377]*377was discriminated against after being rehired based on the employer’s failure to include her prior employment in determining her seniority. The court held that she was time-barred from complaining of the prior illegal discharge because she had not complained at the proper time. In McArthur v. Southern Airways, Inc., 569 F.2d 276 (5th Cir. 1978), this Court followed Evans by dismissing as time-barred a cause of action somewhat similar to the one in Evans. We find it difficult to see the relevance of these decisions to the issue here.
The question we face is whether an EEOC complaint of promotion discrimination is sufficiently related to a hiring discrimination claim to allow the EEOC to investigate both and therefore authorize a suit based on both charges. In Gamble v. Birmingham So. Railroad Co., 514 F.2d 678 (5th Cir. 1975), this Court defined the “reasonable expectation” test of Sanchez again as hinging on whether the broader EEOC investigation might be expected to grow from the original complaint. Id. at 688.
Some courts have interpreted the standard of Sanchez to mean that any practice which is an outgrowth of the same basis of discrimination can be challenged in the court suit. See Graniteville Co. v. EEOC, 438 F.2d 32, 41-42 (4th Cir. 1971) (discrimination in promotion related to discrimination in hiring); McBride v. Delta Airlines, 551 F.2d 113, 115 (6th Cir.), vacated on other grounds 434 U.S. 916, 98 S.Ct. 387, 54 L.Ed.2d 273 (1977) (individual firing charge requires review of any racially discriminatory practices because of large and complex corporate structure). Cf. Arey v. Providence Hospital, 55 F.R.D. 62, 67 (D.D.C.1972) (“[i]t seems clear that once having received the complaint of discrimination against complainant the EEOC would as a reasonable matter, extend their investigations to all areas of employment in which the complainant at one time or another had been exposed, including, of course, the facts and circumstances surrounding the initiation of her employment.”) This Court in EEOC v. Huttig Sash & Door Co., 511 F.2d 453 (5th Cir. 1975) held that a charge of discrimination in termination will support another claim of discrimination in hiring. Other courts have held that the fact that EEOC ended up investigating a broader charge than the one alleged is a strong reason to allow the issue to be raised in a court suit. Henderson v. First National Bank of Montgomery, 344 F.Supp. 1373 (M.D.Ala.1972); Cf. Oubichon v. North American Rockwell Corporation, 482 F.2d 569 (9th Cir. 1973); Note, Developments in the Law — Employment Discrimination and Title VII of the Civil Rights Act of 1964, 84 Harv.L.Rev. 1109, 1216-18 (1971).
We find that the district court had jurisdiction over both the hiring and promotion claims under the Sanchez standard. This Court’s traditional application of a liberal standard in this area is a reflection of our understanding about the realities of Title VII litigation. Often the complainants are poor and uneducated. They are unfamiliar with legal concepts and often do not comprehend the specific elements of their complaint. But they understand the basic premise of the Act. They feel that they have been discriminated against on the basis of race or some other impermissible factor. To hold these individuals to a high standard of knowledge about the bases of their charge would ill-serve the remedial purpose of Title VII. In this case, it is sufficient that Falcon alleged the type of discrimination (“national origin”), especially since an investigation of promotional practices almost inevitably leads to a study of hiring practices, and the EEOC did investigate both areas. EEOC v. Huttig Sash & Door Co., 511 F.2d (5th Cir. 1975).
III. Promotion Claims
In this part of the appeal, General argues that Falcon never proved he was qualified for the promotion he sought. McDonnell Douglas Corp. v. Green, 411 U.S. 792, 93 S.Ct. 1817, 36 L.Ed.2d 668 (1973). General also says that it articulated valid, nondiscriminatory reasons for not promoting Falcon, namely that those persons who were promoted were more qualified than Falcon, and that Falcon failed to prove that those [378]*378reasons were merely pretexts for discrimination. See Board of Trustees v. Sweeney, 439 U.S. 24, 99 S.Ct. 295, 58 L.Ed.2d 216 (1978).
In rebuttal, Falcon suggests that the Supreme Court’s use of the word “articulate” in Sweeney, supra, was not intended to cover subjective criteria, but requires “something rationally based.”
In “disparate treatment” cases, the plaintiff has the burden of establishing a prima facie case. That can be done by the plaintiff by showing
(i) That he belongs to a [protected] minority [under the Act];
(ii) That he applied and was qualified for a job for which the employer was seeking applicants;
(iii) That, despite his qualifications, he was rejected; and
(iv) That, after his rejection, the position remained open and the employer continued to seek applicants from persons of complainant’s qualifications.
McDonnell Douglas Corp. v. Green, 411 U.S. 792, 93 S.Ct. 1817, 36 L.Ed.2d 668 (1973).
Looking at these requirements, we find that clearly Falcon belonged to a protected minority under the Act; that he applied for a job for which the employer was seeking applicants; that he was rejected, and that the employer hired others for the position. The only element of the prima facie case which the appellant attacks here is whether or not Falcon had the qualifications for the position he was seeking.
According to General, Falcon was recommended for promotion to a management position by two of his first level supervisors. At General, once a supervisor recommends an employee for a promotion to a management position, that employee is considered for all management positions for which he is considered qualified by reason of prior experience. General says that Falcon was “not considered the most qualified person for any of the openings.” (Emphasis added.) That claim, however, even if true, does not mean that Falcon was not considered qualified. The fact that Falcon was recommended for promotion to management lends additional support to his contention that he was qualified for those positions. We therefore uphold the trial court’s apparent finding that he was qualified and therefore find he made a valid prima facie case.
Falcon’s having made that prima facie showing, General has the obligation to “articulate some legitimate, nondiscriminatory reason” for the action to dispel the adverse inference from the prima facie showing. McDonnell Douglas at 802, 93 S.Ct. at 1824. As stated in East v. Romine, Inc., 518 F.2d 332 (5th Cir. 1975), the defendant must also prove that those hired or promoted were better qualified than the plaintiff. See Burdine v. Texas Dept. of Community Affairs, 608 F.2d 563, 567 (5th Cir. 1979), cert. granted-U.S.-, 100 S.Ct. 3009, 65 L.Ed.2d 1112 (1980).
In fact, General did put forth the explanation that the people hired for the positions Falcon wanted were more qualified than he was.10 Through statistical evidence, the Company also showed that Falcon had received three promotions in seven years of employment with General, an average of 0.43 promotions a year, while the [379]*379average white worker at General received only .20 promotions per year. In addition, General said that Falcon received his first promotion only one month after being employed; the average white employee did not receive a promotion until he or she had been employed 14.91 months.
However, the trial court found that the ratings given Falcon and the others who had been promoted instead of him were “very similar” (all were favorable). Falcon, the trial court found, had no listed weaknesses except for “underground cable work.” Since the trial court concluded that General had discriminated against Falcon, it must have reasoned that since Falcon had essentially the same overall ratings as those whites who were promoted, the Company’s explanation that the others were “more qualified” was simply a pretext for discrimination and was not a legitimate reason for failing to promote him.11 Cf. Burdine v. Texas Dept. of Community Affairs, 608 F.2d 563, 567, especially n. 8 (5th Cir. 1979), cert. granted-U.S.-, 100 S.Ct. 3009, 65 L.Ed.2d 1112 (1980).
Our task here then is to decide if the trial court was clearly erroneous when it concluded that Falcon was as qualified as the other people who were promoted. We conclude that the finding was not clearly erroneous.
As stated previously, General said that it felt Falcon was not the most qualified applicant for any of the openings. But there was credible evidence to the contrary. The EEOC investigator who looked into the case, Robert Ray, testified that he felt Falcon was not promoted because he was a Mexican-American. His notes made at that time, indicated that several people who worked with Falcon and with some of the others who were promoted, felt Falcon was at least as qualified as those promoted, and was not promoted because of his national origin. Ray also prepared a chart comparing, as objectively as possible, Falcon’s qualifications and experience with that of the other people promoted.12 What he found was that Falcon was better qualified than one of the people promoted above him, as qualified as another, and less qualified than the third.13 Similar findings by EEOC investigators in other cases have been described as “highly probative” by this Court. Peters v. Jefferson Chemical Company, 516 F.2d 447, 450 (5th Cir. 1975); Smith v. Universal Services, Inc., 454 F.2d 154 (5th Cir. 1972). Despite testimony from others that they considered Falcon less qualified than those hired, the trial court could certainly find that given the EEOC investigator’s and Falcon’s testimony, Falcon was as qualified as the other people promoted.14
We also note that this Court has stated previously that while qualifications are obviously an employer’s prerogative, “the standards cannot be automatically applied to freeze out” minorities. Rowe v. General Motors Corporation, 457 F.2d 348, 358 (5th Cir. 1972). In Rowe, this Court recognized [380]*380that “promotion/transfer procedures which depend almost entirely upon the subjective evaluation and favorable recommendation of the immediate foreman are a ready mechanism for discrimination. . . .” Id. at 359. While obviously not determinative in this case since a variety of other factors were considered in the promotion decision, we note that a principal element in that decision were the recommendations of Falcon's supervisors, all of whom were white. Given this Court’s pronouncement in Rowe, the trial court could certainly look at the Company’s explanations that Falcon was less qualified with some skepticism. Cf. Fisher v. Proctor & Gamble Mfg. Co., 613 F.2d 527, 546 (5th Cir. 1980).
We therefore find that the trial court did not act incorrectly when it found that the Company’s explanation that Falcon was less qualified than the others promoted was not legitimate or, as the court has put it, “pretextual.”
IV. Hiring Claims
In this portion of the appeal, General argues that there was insufficient evidence to support the trial court’s conclusions that General discriminated against the class members with respect to hiring. General questions both the factual sufficiency of the evidence, as well as the trial court’s reliance on some statistics, as opposed to others.
In its Phase I order, the court focused on four statistical “facts:”
(1) 5.24% of the Dallas/Forth Worth labor force was Mexican-American;
(2) 1.22% of General’s work force at Irving was Mexican-American in 1972;
(3) Twenty people were hired in 1972, but none of them was Mexican-American;
(4) Only 4% of those hired in 1973 were Mexican-American.
General claims that the district court improperly relied on the statistical disparity between the local labor force and the work force at the Irving facility, rather than relying on the plant hiring statistics for the years between 1972 and 1976. General contends that there is statistical evidence showing that:
(1) Mexican-Americans constituted 7.73% of the persons hired at the Irving facility from July 1972-July 1976, whereas only 5.24% of the local labor market was Spanish-American;
(2) From 1973 through 1976, 71 Mexican-Americans applied for jobs at the Irving facility and 13 were hired, an 18.3% percentage. During this time, only 5.66% of the Caucasian applicants were hired, although 81.5% of the local work force was Caucasian, as were 86.5% of the applicants.
See note 4.
Proof in this sort of class action case is usually dependent upon statistical comparisons. In International Brotherhood of Teamsters v. United States, 431 U.S. 324, 97 S.Ct. 1843, 52 L.Ed.2d 396 (1977), the Supreme Court found that a prima facie case of discrimination could be found by showing great disparities in general population/work force statistics.15 In Hazelwood School District v. United States, 433 U.S. 299, 97 S.Ct. 2736, 53 L.Ed.2d 768 (1977), the Supreme Court found that this same showing of disparity, along with instances of individual discrimination, established a prima facie case. However, there, the Court ruled that this prima facie showing could be rebutted with favorable evidence comparing the qualified labor market with the defendant’s hiring policies during the relevant period.
This Court recently said in United States v. City of Alexandria, 614 F.2d 1358, 1364 (5th Cir. 1980):
To make out a prima facie case of pattern or practice of discrimination in violation of Title VII, all that a private or government plaintiff need show initially is that there is a significant statistical disparity between the racial, sexual, or ethnic balance and composition of an employer’s work force and that of the community from which the workers are hired. . . This is true because, “absent [381]*381explanation, it is ordinarily to be expected that nondiscriminatory hiring practices will in time result in a work force more or less representative of the racial and ethnic composition of the population in the community from which employees are hired.” Teamsters, supra, 97 S.Ct. at 1856 n. 20.
Once this prima facie case has been established, the employer may introduce evidence to attempt to rebut the inference raised by the figures. .
(Citations omitted.)
We take this to mean that once the plaintiff has offered some evidence that is probative of disparity that may be statutorily significant, it is then the defendant’s burden to come up with more specific statistical evidence to rebut the plaintiff’s proof.
In this case, the trial court found that in 1972, the Irving Division hired 20 Caucasians, but no Mexican-Americans, and that in 1973, the total number of Caucasians hired at Irving was 155 or 76.7%, and the number of Mexican-Americans hired was eight or 4%. However, the trial court made no findings about hiring in 1974 or 1975, even though both sides presented statistical evidence, at least through the period of July 30, 1975.16
Evidently, the trial court relied on the plaintiff’s evidence for its hiring findings concerning 1972 and the defendant for its findings concerning 1973. See note 16. However, the trial court made no findings of fact concerning 1974 or 1975. It appears that the trial court must have found discrimination for those periods since the class action notice approved by the court was addressed to “all Mexican-Americans who applied for work at General Telephone Co. in Irving, Texas, in 1972, 1973, 1974, 1975, and through October 18,1976.”17 This conclusion is bolstered by the fact that some members of the class who received relief applied for jobs in late 1975 or early 1976.
It would clearly be inappropriate for us to rule on the appellant’s claim concerning the use of these hiring statistics, as opposed to applicant flow data, without knowing how or why the trial court relied on the statistical evidence it did and why it found hiring discrimination for the years 1974 and 1975. In Hazelwood, the Supreme [382]*382Court indicated that the determination of what set of statistics are relevant can best be decided on a case-by-case basis. 433 U.S. at 311-312. See Davis v. City of Dallas, 483 F.Supp. 54, 60 (N.D.Tex.1979). The evaluation of these statistics involves both a complex legal and factual inquiry. See e. g. Cooper v. University of Texas at Dallas, 482 F.Supp. 187 (N.D.Tex.1979); Davis v. City of Dallas, 483 F.Supp. 54 (N.D.Tex.1979); EEOC v. Radiator Specialty Co., 610 F.2d 178 (4th Cir. 1979). We therefore remand this part of the case to the district court for a more specific evaluation of both the plaintiff’s and defendant’s statistics with specific findings on the use of hiring data as opposed to applicant-flow data, including the reasons why the trial court concludes that the discrimination lasted past 1974.18
V. Admission of General Services Administration (GSA) Reports
In this portion of the appeal, we deal with appellant’s objection to the admission of two letters from the GSA to the appellant, that were obtained from General through discovery. General complains that the letters were not authenticated, that there was no evidence as to the basis for the letters, and that the GSA is not authorized by law to determine whether an employer has violated Title VII.
The appellee claims the letters were admissible under Fed.R.Evid. 803(8) which provides in part:
The following are not excluded by the hearsay rule, even though the declarant is available as a witness: .
(8) Public records and reports. Records, reports, statements, or data compilations, in any form of public offices or agencies, setting forth (A) the activities of the office or agency, or (B) matters observed pursuant to duty imposed by law as to which matters there was a duty to report, ... or (C) in civil actions and proceedings . . ., factual findings resulting from an investigation made pursuant to authority granted by law, unless the sources of information or other circumstances indicate lack of trustworthiness.
As to the authenticity point, it is clear that the letters should have been authenticated under Fed.R.Evid. 901 and 902 which require authentication or identification as a condition precedent to admissibility, except in specific situations, none of which is present here. See Rule 902. However, the defendant did not object at trial that these documents were not authenticated, but objected only on the grounds that the letters were hearsay and not relevant. This Court has held for some time that “[e]xcept in unusual circumstances, the ground of objection to evidence must be specifically stated in order to preserve the point for appeal; . . . ” Carona v. Pioneer Life Insurance Company, 357 F.2d 477, 480 (5th Cir. 1966); Colonial Refrigerated Transportation, Inc. v. Mitchell, 403 F.2d 541, 552 (5th Cir. 1968); Morrow v. Greyhound Lines, Inc., 541 F.2d 713 (8th Cir. 1976); see also F.R.C.P. Rule 46; Rule 103(a)(1), Federal Rules of Evidence. Since General did not make this specific objection, it cannot raise the authentication issue on appeal.
Turning then to General’s arguments concerning relevancy and hearsay, under Fed.R.Evid. 803(8) the letters are admissible if they are made pursuant to duties derived from authority granted by law. The letters were prepared by the General Services Administration, according to the appellant, as part of its contract compliance review.19 While this authorization to inves[383]*383tigate obviously does not parallel the EEOC’s authority under Title VII, the letters were admissible under Rule 803(8)(c) since the findings resulted from an investigation made pursuant to authority granted by law. It was certainly within the court’s discretion to find that the letters were not untrustworthy. See Weinstein and Berger, Weinstein’s Evidence § 803(8)[03] at 200-208 (1979).20
VI. The Application Procedure and the Finding that Openings Existed for Which the Class Members were Qualified
In this portion of the appeal, the appellant urges that the trial judge improperly failed to require the class members to bear the burden of proving that they were qualified for an available opening. As a second point, General argues that the trial court improperly found that General’s employment policy exacerbated the discrimination.
As noted earlier, we have already decided to remand the issue of the class action hiring claims to the district court for further findings of fact. Without those further findings of fact, it is impossible for us to rule on these issues. Any questions surrounding the application procedures and policy will have to wait for answers until the trial court has indicated more clearly why it found discrimination and why it defined the class in the way it did.
VII. Back-Pay Awards
This issue concerns the sufficiency of evidence with respect to the specific back pay awards. Again, because of our previous decision to remand the hiring claims, we cannot review this part of the trial court’s decision as to that portion of the class. However, we can review the claims as they pertain to Falcon, since we have upheld his request for relief.21
The appellees also appeal from the trial court’s decision on this issue. Again, we will only review those specific complaints that pertain to Falcon.22
[384]*384The appellant claims that there was insufficient evidence to show what salaries the employees would have earned at General. See note 21. It is unclear how much of this claim is directed at the award to Falcon. In its Phase II opinion, the trial court calculated Falcon’s earnings on the assumption that he would have been promoted to Field Inspector in 1972. See Part III.23 We think there was clearly enough evidence of what Falcon would have earned to support the trial court’s findings.
As to those contentions of the plaintiffs which are relevant only to Falcon, the trial court found that damages should be granted only up to the end of the “Phase I” trial, since it found that the defendant, by that date, had remedied the discriminatory practices which gave rise to the litigation. As to Falcon, we do not find that decision to be clearly erroneous, intimating no judgment on the other class claims. In such matters, the trial court has broad discretion. Cf. Fitzgerald v. Sirloin Stockade, Inc., 22 EPD ¶ 30,724 (10th Cir. 1980).
VIII. Attorneys' Fees
Since a portion of this suit is being remanded, we do not review the attorneys’ fee claim at this time.
We therefore remand this case to the district court for proceedings not inconsistent with this opinion.
AFFIRMED IN PART AND REMANDED IN PART.