MEMORANDUM AND ORDER

On May 4, 2009, Magistrate Judge Reyes issued a Report and Recommendation (“R & R”) recommending that a default judgment be entered against defendant in the amount of $238,133.21. See R & R at 254. The R & R also stated that failure to object within ten days would preclude appellate review. See id. at 12. Attorney for plaintiffs mailed a copy of the R & R to defendant on May 5, 2009; no objections have been filed.

If clear notice has been given of the consequences of failure to object, and there are no objections, the Court may adopt the R & R without de novo review. See Mario v. P & C Food Mkts., Inc., 313 *249F.3d 758, 766 (2d Cir. 2002) (“Where parties receive clear notice of the consequences, failure timely to object to a magistrate’s report and recommendation operates as a waiver of farther judicial review of the magistrate’s decision.”). The Court will excuse the failure to object and conduct de novo review if it appears that the magistrate judge may have committed plain error, see Spence v. Superintendent, Great Meadow Corr. Facility, 219 F.3d 162, 174 (2d Cir. 2000); no such error appears here. Accordingly, the Court adopts the R & R without de novo review and directs the Clerk to enter judgment in accordance with the R & R.

SO ORDERED.

REPORT & RECOMMENDATION

Plaintiffs, Gary La Barbera, Thomas Gesualdi, Louis Bisignano, Anthony Pirozzi, Frank Finkel, Joseph Ferrara, Sr., Marc Herbst, Thomas Piali, and Christopher Ward, as trustees of the Welfare, Pension, Annuity, Job Training and Vacation and Sick Leave Trust Funds of Teamsters Local 282 (the “Funds”), brought this action against defendant, Tadco Construction Corp. (“Tadco”), alleging that Tadco has violated the Employee Retirement Income Security Act of 1974 (“ERISA”) because of their refusal to comply with the terms of the Restated Agreement and Declaration of Trust (“Trust Agreement”) governing the Funds, as well as the collective bargaining agreement (“CBA”) between Tad-co and Local 282. The plaintiffs allege that Tadco did not comply with the Trust Agreement or the CBA because it has failed to respond to requests to produce its pertinent books and records for audit.

In light of Tadco’s failure to appear in or otherwise defend this action, plaintiffs moved for default judgment on November 26, 2008. (Docket Entry 13.) On December 1, 2008, the Clerk of the Court noted defendant’s default pursuant to Federal Rules of Civil Procedure 55(a). On February 3, 2009, the Honorable Frederic Block found the allegations in the complaint sufficient to establish a violation of the Trust Agreement and the CBA and ordered the defendant to produce its books and records for the relevant period May 2005 to February 2, 2009 within 30 days so that an audit could be conducted to determine any outstanding contributions. (Docket Entry 19.) If the pertinent books and records were not produced, then the formulas to calculate the contributions owed under the Trust Agreement were to be assessed accordingly. (Id.) The matter was then referred to me to supervise the audit and issue a Report and Recommendation on the relief to be awarded. (Id., at 3.)

BACKGROUND

The Funds are employee benefit plans within the meaning of section 3(3) of ERISA. (Docket Entry 9, ¶ 5); 29 U.S.C. § 1002(3). Tadco entered into a CBA with Local 282, effective from July 1, 2002 until June 30, 2006. Pursuant to the CBA, all signatories were a party to and bound by the terms of the Trust Agreement that established the Funds on July 1, 1999.1 (Docket Entry 14, Ex. C, Section 13(G).) On July 1, 2006, a new CBA between Tadco and Local 282 was entered into, effective through June 30, 2009, maintaining Tadco’s status as being a party to and bound by the Trust Agreement. (Id., Ex. C.)

Pursuant to the Trust Agreement, defendant is required to pay fringe benefit *250contributions to the Funds on behalf of its employees who are members of Local 282. (Docket Entry 9, ¶ 5.) Defendant is also required under the Trust Agreement to submit monthly remittance reports to the Funds. {Id. ¶ 10.) The monthly remittance reports state the hours worked in any given month by the employees covered by the CBA and the amounts to be paid to the Funds based on the hours worked. Tadco did not submit a remittance report for August 2006 and has not submitted any remittance reports since October 2006. {Id., 1111.) The plaintiffs notified Tadco of its failure to submit remittance reports and requested the delinquent reports by letter seven different times. However, Tadco never responded. {Id., ¶ 12.)

An audit to review Tadco’s books and records on site was scheduled for October 10, 2006. However, Tadco cancelled this audit, and it was never rescheduled. {Id., ¶ 15.) Consequently, pursuant to their authority under the Trust Agreement, on February 27, 2007, the plaintiffs demanded that Tadco submit its pertinent books and records for an audit. {Id., ¶ 18.) Despite the plaintiffs’ demand, Tadco failed to produce the requested books and records for audit. This prompted the plaintiffs to initiate this action on July 11, 2007.

DISCUSSION

“While a party’s default is deemed to constitute a concession of all well pleaded allegations of liability, it is not considered an admission of damages.” T.W. WANG INC. Greyhound Exhibitgroup, Inc. v. E.L.U.L. Realty Corp., 973 F.2d 155, 158 (2d Cir. 1992) (citing Flaks v. Koegel, 504 F.2d 702, 707 (2d Cir. 1974) and Fed. R. Crv. P. 8(d)). Claims for damages must generally be established in an evidentiary proceeding at which the defendant is afforded the opportunity to contest the amount claimed. Id. An evidentiary presentation is required so that the court may ensure that there is a basis for the damages sought before entering default judgment in the amount demanded. Fustok v. ContiCommodity Servs., Inc., 873 F.2d 38, 40 (2d Cir. 1989). A court may make this determination based upon evidence presented at a hearing or upon a review of detailed affidavits and documentary evidence. See Fed R. Crv. P. 55(b)(2); Action S.A. v. Marc Rich & Co., Inc., 951 F.2d 504, 508 (2d Cir. 1991); Fustok, 873 F.2d at 40.

Plaintiffs claims that they are entitled to the following relief under the Trust Agreement:

(1) $176,698.73 in unpaid contributions;

(2) $34,674.31 in interest on the penalty amount contributions;

(3) the greater of the interest on the penalty amount contributions or liquidated damages;

(4) $5,572 in attorney’s fees; and

(5) $1,861.60 in costs.

To support their damages request, the plaintiffs submitted a declaration of Theresa Cody, an employee of the Funds who is responsible for organizing the Funds’ records and recording whether an employer has submitted monthly remittance reports and required contributions to the Funds. (Docket Entry 14.) Attached to Cody’s declaration is the Trust Agreement, the expired CBA, and the current CBA. {Id., Ex. A, B, and C.) In addition, the plaintiffs submitted a declaration of Ken Jones, an auditor who computed the amount due by Tadco for their failure to comply with the Trust Agreement and CBA. (Docket Entry 15.) Attached to Jones’ declaration is his audit report. {Id., Ex. A.) The plaintiffs also submitted a declaration of Anusha Rasalingam, their lead attorney, supporting their request for interest, liquidated damages, attorney’s fees and costs. (Docket Entry 16.) On February 24, 2009, *251Ken Jones submitted a second declaration that further explained the plaintiffs’ damages calculation and included the monthly remittance reports submitted by Tadco during the relevant period. (Docket Entry 20; Id., Ex. A.)

According to the Trust Agreement, if an employer fails to submit remittance reports and/or books and records for an audit, a formula may be utilized to calculate the contribution amounts due by the employer, notwithstanding the employer’s submission of monthly remittance reports and payment of the appropriate contribution during the requested audit period. The Trust Agreement provides two different calculation methods. Determining which of the two methods to use depends on whether Tadco submitted monthly remittance reports or not. (Docket Entry 9, ¶ 33-36.)

A. Calculation of Unpaid Contributions

1. No Reports and No Books and Records Submitted

For months in which Tadco failed to submit monthly remittance reports, the formula set forth in Article IX(i )(e) of the Trust Agreement applies:

[i]n the event the Employer fails to submit the required [remittance] reports and/or2 pertinent books and records for audit within twenty (20) days after written demand, the Trustees, or their agents, may compute the sum due for any month by adding 10 percent to the number of hours for the month in which the largest number of hours were reported in the previous twelve (12) reports submitted by the Employer (hereinafter referred to as the base month).

The number of hours reported in the base month is increased by 10 percent; this number is then multiplied by the appropriate fringe benefit rate (“FBR”) to arrive at the contribution amount due for that month. (Docket Entry 14, Ex. A, Article IX(l)(e).) This formula provides a mechanism to estimate the contributions owed by the employer to the Funds since no reports were submitted and no books and records were made available to determine how much the employer owes for that month. La Barbera v. J.D. Collyer Equipment Corp., 337 F.3d 132, 134 (2d Cir. 2003) (approving of the use of an identical formula).

Tadco did not submit remittance reports or its books and records for August 2006, or from October 2006 through September 2008. Accordingly, there are 25 months in which this formula may be used to determine the contribution amounts. In the last 12 reports submitted by Tadco, the greatest number of hours reported was 201.5 in December 2005. (Docket Entry 21, ¶ 20.) Therefore, utilizing the formula yields 221.65 hours (201.5 times 1.10) per month for the 25 months that Tadco did not submit reports or books and records. Plaintiffs argue that 221.65 should then be multiplied by the September 2008 FBR for each of the 25 months to arrive at the contribution amount owed.3 The September 2008 FBR, however, did not become effective until July 1, 2008, and therefore should not be used retroactively for periods prior thereto. (Docket Entry 14, Ex. C.) Consequently, the appropriate FBR is *252the FBR that was in effect for each month in which the work was performed by the Local 282 member/employee. Using this method, I calculate that the plaintiffs are entitled to $153,881.62 for the 25 month period in which no reports and no books and records were submitted:

Months Hours Total Total Amount FBRs

8/06 and 2216.5 (10 $26.7025 $59,186.09

10/06-6/07 months * per hour (2216.5 * 221.65 hrs) $26. 7025)

7/07-6/08 2659.8 (12 $28.3025 $75,278.99 months * per hour (2659.8 * 221.65 hrs) $28. 3025)

7/08-9/08 664.95 (3 $29.20 $19,416.54 months * per hour (664.95 * 221.65 hrs) $29.20)

Total Amount: $153,881.62

I respectfully recommend that the plaintiffs be awarded $153,881.62 for these months.

2. Reports but No Books or Records Submitted

For the months in which monthly remittance reports were submitted by the defendant but the pertinent books and records were not provided upon request, Article IX(l)(f) of the Trust Agreement provides:

[i]n the event the Employer submits the required remittance reports, but thereafter such Employer fails to submit the pertinent books and records for audit ... the Trustees and/or their agents may compute the additional contributions due for any month by taking 50 percent of the number of hours reported for that month and then multiplying said number of hours by the current contribution rate. (Id., Ex. A, Article IX(l)(f).)

Thus, the failure to provide the pertinent books and records upon request entitles the plaintiffs to collect additional contributions from the employer amounting to half the contribution amount already paid for that month. Employers are required to maintain records so that the Funds can ensure the accuracy of the remittance reports, and thereby effectively countering the problem of misreporting by employers. La Barbera, 337 F.3d at 137. If the pertinent books and records are not available, the Funds are unable to verify the truth and accuracy of the reported hours and the contributions made to the Funds for those months. Id., at 134. When the Funds are unable to verify that the employer reported and paid the correct contribution, this formula imposes an additional contribution on the employer as a “good faith estimate of the truth.” Id., at 137.

Tadco did submit remittance reports from June 2005 through July 2006, but did not provide the pertinent books and records for that period. Another report was submitted by Tadco in September 2006 with no accompanying books and records, and thereafter no remittance reports were submitted through September 2008. (Docket Entry 20, Ex. A.) Therefore, for the 15 months that Tadco did submit a remittance report but not the pertinent books and records, the plaintiffs are entitled to implement this formula and seek additional contributions. As discussed above, the applicable FBR is the rate that was in effect at the time the work was performed and the report was submitted. Based on the monthly remittance reports, I calculate that the plaintiffs are entitled to additional contributions amounting to $12,598.58:

Months Reported Hours Reported Hours / 2 Total of Total

_Effective FBRs Contribution

6/05_246.5_123.25_$23.6025_$ 2,909.01

*2536/05-9/06 4 772_386 _$25.1025_$ 9,689.57

_Total Amount: $12,598.58

I respectfully recommend that the plaintiffs be awarded $12,598.58 for these months.

B.Prejudgment Interest

Plaintiffs also seek prejudgment interest on the unpaid contributions in the amount of $34,671.31. (Docket Entry 9, ¶ 28.) Pursuant to ERISA, “interest on the unpaid contributions shall be determined by using the rate provided for under the plan.... ” 29 U.S.C. § 1132(g)(2)(B). An Amendment to the Trust Agreement, effective October 28, 2003, states that the interest to be charged is at a rate of “1/6 % per month for each ... amount due for each month.” (Docket Entry 14, Ex. A, Article IX(5)(d)(2).) A Vk percent monthly interest rate results in an 18 percent per annum rate. (Docket Entry 15, ¶ 13.) This rate is the equivalent to 0.0493 percent per day (18% / 365 days).

The per diem rate is then multiplied by the number of days the principal for that month is in arrears through September 2008.5 Pursuant to the Trust Agreement, interest begins to accrue on the first day of the month in which payment is due. (Id.) Payment is due for each month 45 days after the last day of the calendar month in which the work was performed. (Docket Entry 14, Ex. B, Section 13(F).) For example, the June 2005 payment was due August 14, 2005-45 days after June 30. Therefore, for the June 2005 unpaid contribution amount due to the Funds, interest began accruing on August 1, 2005 and ended September 30, 2008. This number is then multiplied by the unpaid contribution amounts for that month. See Trustees of Local 807 Labor-Management Health & Pension Funds v. River Trucking and Rigging, Inc., No. 03-CV-3659, 2005 WL 3307080, at *1 (E.D.N.Y. Dec. 2, 2005). Following the same method for all the relevant months, using the appropriate FBRs as discussed above, the total interest on the unpaid contributions due to the Funds is $31,638.35, not $34,674.31 as the plaintiffs suggest. See attached table for interest calculations (Appendix A). Accordingly, I recommend the plaintiffs be awarded $31,638.35 in interest.

C. Liquidated Damages

Under ERISA, plaintiffs are entitled to an amount equal to the greater of (1) interest on the unpaid contributions; or (2) liquidated damages provided for under the plan that is not greater than 20 percent of the unpaid contributions. See 29 U.S.C. § 1132(g)(2)(C). Article IX, Section 3(d) of the Trust Agreement mirrors the statutory language, (Docket Entry 14, Ex. A, Article IX(3)(d)), and the plaintiffs requested an amount equal to the greater of the two. (Docket Entry 9, ¶ 28.) The greater of the two amounts is $33,296.04,6 which I respectfully recommend that plaintiffs be awarded for liquidated damages.

D. Attorneys’ Fees

Plaintiffs also seek to recover attorneys’ fees. An award of reasonable *254attorneys’ fees is mandatory under ERISA. See 29 U.S.C. § 1132(g)(2)(D). Furthermore, under Article IX, Section 3(a), plaintiffs are entitled to attorneys’ fees “equal to the actual amount to be billed to the Trustees by their counsel for work performed in connection with this matter.” (Docket Entry 14, Ex. A, Article IX(3)(a).) Even though the Trust Agreement provides that the plaintiffs are entitled to the actual amount billed by their attorneys, an award of attorneys’ fees must still be reasonable under the statute. Bourgal v. Lakewood Haulage Inc., 827 F.Supp. 126, 129 (E.D.N.Y. 1993) (“The determination of a reasonable fee award under Section 1132(g)(2)(D) of ERISA lies within the sound discretion of the district judge.”) In support of their request for attorneys’ fees, plaintiffs submitted a declaration of Anusha Rasalingam, their lead attorney in this matter. (Docket Entry 16.) Attached to Rasalingam’s declaration is a detailed invoice, describing the time spent on the case by Rasalingam and her associate, Amie Ravitz Hogan, in discrete entries (i.e., in non-block billed form). (Id., Ex. C.) Both attorneys charge $280.00 an hour; and they spent a combined total of 19.9 hours on the case, resulting in $5,572 in attorneys’ fees. (Id. at ¶ 29.) I find these rates and the hours spent to be reasonable given the complexity of the case and the attorneys’ expertise in labor and employee benefit practice.7 See, e.g., McDonald v. Pension Plan of the NYSA-ILA Pension Trust Fund, 450 F.3d 91, 97-8 (2d Cir. 2006). Accordingly, I recommend that plaintiffs be awarded $5,572 in attorneys’ fees.

E. Costs

The plaintiffs request a total of $1,861.60 in costs. (Docket Entry 9.) Under ERISA, an award of costs is mandatory. See 29 U.S.C. § 1132(g)(2)(D). Plaintiffs incurred $1,064.10 in costs commencing this action (e.g., filing fees, postage, and service of process). (Docket Entry 16, Ex. D.) These costs are reasonable, so I respectfully recommend the plaintiffs be awarded this amount.

The plaintiffs are also entitled to the audit costs under Article IX(3)(b) of the Trust Agreement.8 (Docket Entry 14, Ex. A, Article IX(3)(b).) The declaration of Ken Jones, the Funds’ auditor, states that the audit cost $797.50. Plaintiffs request this amount. (Docket Entry 15, ¶ 14.) Attached to Jones’s declaration is a summary of the audit, confirming this cost. (Id. ¶ 14, Ex. A.) I find the cost to be reasonable. Therefore, I recommend the plaintiffs be awarded the full costs of the audit in accordance with the Trust Agreement.

In conclusion, I respectfully recommend the plaintiffs be awarded costs totaling $1,861.60.

CONCLUSION

For the foregoing reasons, I respectfully recommend that default judgment be entered against defendant in the amount of $238,133.21, comprised of 1) $166,480.20 in unpaid contributions; 2) $31,638.35 in prejudgment interest through September 2008; 3) $33,296.04 in liquidated damages; *2554) $5,572 in attorneys’ fees; and 5) $1,861.60 in costs.

Any objects to the recommendations made in this Report must be filed with the Clerk of the Court and the Honorable Frederic Block within ten business days of receipt hereof. Failure to file timely objections may waive the right to appeal the District Court’s Order. See 28 U.S.C. § 636(b)(1); Fed.R.Civ.P. 6, 72; Small v. Sect’y of Health & Human Servs., 892 F.2d 15, 16 (2d Cir. 1989). Plaintiffs are hereby directed to serve copies of this Report and Recommendation upon defendant, and to promptly file proof of service with the Court.

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