The appellant, Lessie C. Jordan, is the widow of Theodore Franklin Jordan, who before his death was an employee of Appalachian Power Company, the appellee. Mrs. Jordan contends that the Workmen’s Compensation Appeal Board [Appeal Board] erred in refusing to award her a greater benefit than received by her husband pri- or to his death. She also states that W.Va. Code, 23-4-14, violates the Equal Protection Clause of the State and Federal Constitutions. We disagree, and affirm the Appeal Board.
On September 14, 1966, while working for Appalachian, Mr. Jordan was injured. Based on that injury, the Workmen’s Compensation Commissioner on September 29, 1970, ordered a total permanent disability award of $42.00 per week. After the death of Mr. Jordan on September 28, 1976, the appellant filed a timely application for dependent’s benefits. By order of October 28, 1976, the Commissioner awarded her benefits at the rate of $180.75 a week. Appalachian protested the amount of the award, but not appellant’s eligibility therefor.
Hearings in the matter were held in April and October of 1977. In August of 1978, the Commissioner affirmed his prior order awarding benefits at the rate of $180.75 a week. Appalachian appealed to the Appeal Board, and by order of May 29, 1979, the Appeal Board concluded the amount of the award was incorrect and reversed the Commissioner’s order.
Appellant contends that the Appeal Board misapplied the principles of Sizemore v. State Workmen’s Compensá*201tion Commissioner, 159 W.Va. 100, 219 S.E.2d 912 (1975), where it was held that under the Workmen’s Compensation statute, a dependent’s benefits are a separate and distinct claim. Sizemore also held that a dependent’s right to benefits is determined as of the date of the employee’s death. Appellant, therefore, argues that since her husband died on September 28, 1976, her right to dependent benefits arises as of that date.
We do not disagree that the date of the employee’s death is the date that his dependent’s claim comes into existence. However, Sizemore is not dispositive of the issue, since it construed W.Va. Code, 23-4-10, as it existed prior to its 1974 amendments. Prior to 1974, this Code section contained specified dollar amounts that were to be paid to dependents. In 1974, W.Va. Code, 23-4-10, was amended to provide that dependents “shall be paid ... in the same amount as was paid ... the deceased employee for total disability had he lived.” W.Va. Code, 23-4-10 (b). Thus, dependents no longer receive a separately stated dollar amount for dependent benefits, but obtain the same amount as was paid to the deceased employee had he lived.
There is no dispute that during his lifetime, Mr. Jordan received $42.00 a week in benefits. Because he was injured prior to July 1, 1971, he did not receive the benefit of W.Va. Code, 23-4-14, which was changed in 1971 to permit claimants injured after July 1, 1971, to obtain the advantage of any changes made to the schedule of monetary benefits.1
*202We conclude that the Appeal Board is correct, and that when W.Va. Code, 23-4-10 (b), is read in conjunction with W.Va. Code, 23-4-14, a dependent is entitled to receive the same amount of monetary benefit that the deceased claimant was receiving during his lifetime.
The Appeal Board’s decision does not arise from an erroneous reading of Sizemore, since Code 23-4-10, as interpreted in Sizemore, has been changed by the 1974 amendments. We have indicated in Pnakovich v. State Workmen’s Compensation Commissioner, 163 W.Va. 583, 259 S.E.2d 127, 130 (1979), that where the Legislature establishes a clear statutory provision relating to the date or manner in which benefits are to be calculated, we will follow such proscription. This is but a corollary to the conventional rule that where a statute is plain and unambiguous, courts will give it full effect. Richardson v. State Compensation Commissioner, 137 W.Va. 819, 74 S.E.2d 258 (1953); Carper v. Kanawha Banking & Trust Co., 157 W.Va. 477, 207 S.E.2d 897 (1974); State v. Elder, 152 W.Va. 571, 165 S.E.2d 108 (1968).
The appellant contends that by fixing July 1, 1971, as the operative date on which injuries are classified under W.Va. Code, 23-4-14, the Legislature has violated the Equal Protection Clauses of the State and Federal Constitutions. This argument centers on the fact that if the injury occurs prior to July 1, 1971, then under W.Va. Code, 23-4-14, any increase in the schedule of benefits cannot be obtained, whereas if the injury occurs after that date, such increases can be obtained.
We have traditionally held, as has the United States Supreme Court, that the Equal Protection Clause does not preclude the Legislature from enacting statutory classifications. Syllabus Point 5, State ex rel. Heck’s, Inc. v. Gates, 149 W.Va. 421, 141 S.E.2d 369 (1965). In Cimino v. The Board of Education of the County of Marion, 158 W.Va. 267, 210 S.E.2d 485, 490 (1974), we followed the *203federal approach and held that there are two tests where equal protection violations are asserted. If the statute impinged on fundamental or constitutional rights, the State must show a compelling State interest to sustain the classification. On the other hand, if the statute does not infringe on such sensitive rights, the State must only demonstrate that the statutory classification bears some rational relationship to a legitimate State purpose. See, e.g., Woodring v. Whyte, 161 W.Va. 262, 242 S.E.2d 238 (1978); State ex rel. Piccirillo v. City of Follansbee, 160 W.Va. 329, 233 S.E.2d 419 (1977); San Antonio Independent School District v. Rodriguez, 411 U.S. 1, 93 S.Ct. 1278, 36 L. Ed. 2d 16 (1973).
The appellant concedes that W.Va. Code, 23-4-14, affects economic rights and not fundamental or constitutional rights. In Usery v. Turner Elkhorn Mining Co., 428 U.S. 1, 49 L. Ed.2d 752, 96 S.Ct. 2882 (1976), the Court remarked that statutes “adjusting the burdens and benefits of economic life come to this Court with a presumption of constitutionality.” [428 U.S. at 15, 49 L. Ed. 2d at 766, 96 S.Ct. at _].
The 1971 amendment to W.Va. Code, 23-4-14, quoted in the earlier portion of the opinion, was primarily designed to enable those persons injured after the effective date of the Act to obtain an increase in benefits at any time there was a statutory increase in benefit payments. It can hardly be questioned that this was a beneficial provision. From a purely rational standpoint, it also seems obvious that the Legislature did not want to establish this same right for everyone who had been injured prior to July 1, 1971, because it would have placed a severe financial drain on the Workmen’s Compensation Fund to pay enhanced benefits on prior claims where the employer’s premiums had already been paid based on the lower benefit rates.
It is obvious that anytime a statute is amended to provide for enhanced benefits as of a certain date, there is a certain arbitrariness in the time-drawing process, but this alone does not give rise to an equal protection *204problem. We confronted this question in Woodring v. Whyte, supra, under the good time credit statute, W.Va. Code, 28-5-28, and concluded that no equal protection problem existed because inmates coming into the penal system after the effective date of the Act received full benefits, while others already incarcerated obtained only a partial benefit on their remaining sentence. An even more analogous case is Califano v. Webster, 430 U.S. 313, 51 L. Ed. 2d 360, 97 S.Ct. 1192 (1977), where an amendment to the Social Security Act was upheld against a claim of equal protection violation. The amendment provided for enhanced benefits for men, but only those reaching age 62 after the effective date of the Act.
We, therefore, conclude that W.Va. Code, 23-4-14, by extending increases in benefit rates to only those claimants who are injured after July 1, 1971, does not violate the Equal Protection Clause of the United States or West Virginia Constitutions as to those who were injured prior to July 1, 1971.
For the foregoing reasons, we affirm the decision of the Workmen’s Compensation Appeal Board.
Affirmed.
The material part of W.Va. Code, 23-4-14, is:
“In any claim for injuries, including occupational pneumoconiosis and other occupational diseases, occurring on or after July one, one thousand nine hundred seventy-one, any award for temporary total, permanent partial or permanent total disability benefits or for dependent benefits, shall be paid at the weekly rates or in the monthly amount in the case of dependent benefits applicable to the claimant therein in effect on the date of such injury. If during the life of such award for temporary total, permanent partial or permanent total disability benefits or for dependent benefits, the weekly rates or the monthly amount in the case of dependent benefits are *202increased or decreased, the claimant shall receive such increased or decreased benefits beginning as of the effective date of said increase or decrease.”