SUMMARY OF FACTS AND PROCEDURAL HISTORY
Respondent Jennie Switch sustained an injury while working for petitioner Wal-Mart Stores, Inc., and filed a claim for workers’ compensation benefits. At the hearing, the parties stipulated that Switch had worked at her job an average of seven hours per day, five days a week for approximately two years. They also stipulated that during the year preceding her injury, Switch was paid at the rate of $4.65 per hour for the first 36 weeks, $4.85 per hour for the next six weeks and $5.35 per hour for the last ten weeks. The trial court computed Switch’s compensation rate based upon her hourly wage on the date of her injury — $5.35 per hour. On appeal, the Court of Appeals ruled that the compensation rate should be computed by averaging Switch’s daily wages paid during the year preceding her injury. This Court granted the employee’s petition for certiorari on December 16, 1993.
ISSUE
The sole issue to be decided in this proceeding is whether the “average weekly wages” used in calculating an injured worker’s compensation rate under
DISCUSSION
Title
Except as otherwise provided in this act, the average weekly wages of the injured employee at the time of the injury shall be taken as the basis upon which to compute compensation and shall be determined as follows:
1. If the injured employee shall have worked in the employment in which he was working at the time of the accident whether for the same employer or not, during substantially the whole of the year immediately preceding his injury, his average annual earnings shall consist of three hundred times the average daily wage or salary which he shall have earned in such employment during the days when so employed.
⅛ ⅝ ⅝ ⅜ 5¡í ⅜
4. The average weekly wages of an employee shall be one fifty-second (⅛) part of his average annual earnings.
(emphasis added).
1
Under this statutory scheme, a claimant’s average weekly wages are computed by multiplying her average daily wage by 300 (subsection (1)) and dividing that amount by 52 (subsection (4)).
City of Norman v. Bowers,
The question presented in this case apparently has never been precisely addressed by this Court. Both the employer and the Court of Appeals relied upon
W.E. Shepherd & Son v. Hood,
The fundamental rule of statutory construction is to ascertain and, if possible, give effect to the intention and purpose of the Legislature as expressed in a statute.
Public Service Co. of Oklahoma v. State ex rel. Corp. Comm’n,
The Court of Appeals based its decision upon a narrow construction of the language appearing at the end of 85 O.S. § 21(1). That language provides that a worker’s average annual earnings shall consist of 300 times the “average daily wage or salary which he shall have earned in such employment during the days when so employed.” The appellate court’s restrictive interpretation — that average daily wages are computed by averaging hourly wages paid during the year preceding injury — does not comport with the initial sentence of § 21 that refers to average weekly wages “at. the time of the injury.”
The appellate court’s ruling also contravenes the purpose of the Workers’ Compensation Act. This Court has held that the purpose of the Act is to compensate injured workers for loss of earning power and disability to work.
Special Indemnity Fund v. Treadwell,
Examining other relevant provisions of the Act, we first note that the term “wages” has been statutorily defined as “the money rate at which the service rendered is recompensed under the contract of hiring in force
at the time of the injury....’’
In the context of the foregoing discussion,
M.T. Smith & Sons Drilling Co. v. Breed,
*360 We are of the opinion that the Legislature, in designating that the compensation in this class of case should be computed upon respondent’s “average weekly wage” at the time of the injury, intended that the “average weekly wage” should be computed upon what the evidence shows to have in fact been the average weekly wage of the claimant at the time of the injury, and not upon the daily wage received by claimant while engaged in other business for his employer, when the evidence shows conclusively that respondent at that time was engaged in temporary work for a period of only a few days, which work was not the ordinary and usual work performed by respondent for petitioner, and which wage was not the ordinary and usual wage paid respondent by petitioner.
Id.
We also find that subsection (3) of § 21 supports our conclusion that compensation rates must be based upon the daily wages of an employee at the time of her injury. Subsection (3) is used to calculate average annual earnings whenever such earnings cannot reasonably and fairly be determined under § 21(1) or (2). This subsection mandates that annual average earnings “shall reasonably represent the annual earning capacity of the injured employee in the employment in which he was working at the time of the accident.” Earning capacity is synonymous with the term earning power, while the phrase “employment ... at the time of the accident” necessarily implicates wages paid for such employment at that time. It is clear that compensation rates calculated under this subsection are to be based upon the wages earned by an injured worker at the time of her injury, which comports with the Act’s purpose of compensating injured workers for their lost ability to earn future wages. We do not believe that the Legislature intended to treat disparately those injured employees whose compensation rates are calculated under subsections (1) or (2).
CONCLUSION
In calculating an injured worker’s compensation rate under
Certiorari previously granted. The opinion of the Court of Appeals is vacated. The order of the Workers’ Compensation Court is affirmed.
Notes
. This section was amended by Laws 1992, c. 294, § 6, eff. Sept. 1, 1992. Petitioner sustained her injury prior to the effective date of the amendment.
. Because the parties stipulated to the average number of hours worked per day by respondent, we need not here delineate the proper method for calculating the average number of hours worked per day by an injured employee.
