Claimant, Craig F. Haynes, appeals from the denial of worker’s compensation benefits.
Haynes was injured on April 19, 1986, while at work on the premises of his employer R.B. Rice Company. The duties of his employment included cleaning metal chili tubs by using 180 degree Farenheit water directed into the tubs with a high pressure hose.
It is critical to note the following scenario regarding the events that preceded Haynes’ injury. On the evening and early morning hours preceding his injury, Haynes had intravenously injected approximately 1⅝ grams of cocaine into his bloodstream in a series of injections over a four hour period. Additionally, he drank from four to six beers. Further, he had not eaten nor slept the night prior to this incident.
Haynes was addicted to cocaine; his habit cost him nearly all his weekly paycheck. Within weeks of this injury he admits having blacked out as a consequence of excessive use or overdose of cocaine. Additionally, six weeks prior to this incident he nearly died from an overdose.
On the morning of this incident, Haynes was driven to work by a friend, Eddie Salter, who was with him the preceding night. They arrived at approximately 6:00 *404a.m. Haynes was seen trying to walk into the plant by a co-worker, James Jamison. Mr. Jamison testified as follows:
Q. Tell the Judge what you observed when Eddie, Tim and Craig all arrived on the premises that morning?
A. The first thing they done was they parked, then Eddie and Tim left and Craig sat there in the car for a little while and then he got out of the car and a—
Q. Okay, let’s stop there for a minute.
* ⅜ * * * ⅜
Q. Tell the Judge exactly what you observed after that?
A. Well, they got out and they left and he stayed in there and I come on up the ramp and stayed there a little while and then he got out of the car and attempted to come down through the basement to go either to the time clock or wherever he was headed at that time.
Q. What did you observe?
A. Well, he wasn’t, he wasn’t able to walk right, and he didn’t walk right, and he started to go down the ramp and he fell down on his knees and he just kind of put his hands forward like this and I walked up to him.
Q. While he was sitting there on his hands and knees?
A. Right. And I tried to' help him up, and I tried to help him up three or four different times before I got him up. Well, first of all, I asked him, I said, are you all right.
Q. What did he answer?
A. He never did answer me, he just looked at me, he didn’t answer me or nothing; and so then I helped him up and got him back to the car and that is where he just kind of set down on his hind end again, so I left him there.
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Q. (By Mr. Stigall) And you stated you helped him up?
A. Yes.
Q. Then after you helped him up, what happened then?
A. Got him back to the car, which took a lot of time to do because he couldn’t'walk, he just keep slumping down and you’d have to keep picking him up, and practically toting him.
Q. All right. So then you got to the car, what happened then?
A. I opened the door latch, see, I had his arm with this hand and this arm around him and then I just reached out and got the door latch and then he just kind of saddled down and set down on his hind end and looked up at me and grinned and just laughed.
Haynes was found lying unconscious in scalding water in the chili room at 8:15 or 8:30 a.m., after he had been at work from 90 minutes to two hours. The fall was caused by, or caused, a loss of consciousness. As he lay unconscious on the floor, his head, face, right arm and buttocks were severely burned by the scalding water from the open hose. No one witnessed the fall. However, Haynes told a paramedic that he had not ingested any drugs for twenty-four hours prior to his injury.
There is some dispute in the evidence as to what exactly Haynes had done on the job immediately preceding his accident. His friend, Eddie Salter, testified that on the evening before he only saw Haynes drink four to five beers. Salter admits drinking more beer than that himself. Nonetheless, Salter, claims that he drove to work the next day, that he and Haynes entered the building plant together, and that Haynes was able to walk straight. Salter claims he saw Haynes at the break room and he appeared to be okay. Additionally, Salter states that he saw him during working hours (but before the accident) going back and forth with tubs. Salter stated that he was told that the lights were on in his car, and he asked Haynes to go turn them off. He did not sée Haynes again until he learned of the accident.
Conversely, Haynes’ supervisor, Melody Pease, testified that she arrived on the job five or ten minutes after the accident. She tried to calm Haynes after the accident. It was her testimony that no tubs had been rinsed out that morning. She further testi*405fied that the floor was dry except for the area where the hose was, and that there was no grease on the floor.
The Labor and Industrial Relations Commission (Commission) denied Haynes’ claim for worker’s compensation on the ground that his fall was not work related — that it was “an idiopathic fall or blackout ... likely related to cocaine injections.” An idiopathic fall, or (to use Larson’s language) an “injury arising out of a risk or condition personal to the claimant,”1 might have happened anywhere under any circumstances and would not have been work related. This finding was placed over against Haynes’ claim that his fall had been caused by a sudden slip and fall. The Commission also found that Haynes w.as intoxicated to a degree that it was impossible for him to perform his duties.
On appeal, the scope of review is limited by section 287.490, RSMo 1986, to questions of law, and this Court may set aside the award of the Commission only upon the following grounds:
(1) That the Commission acted without or in excess of its powers;
(2) That the award was procured by fraud;
(3) That the facts found by the Commission do not support the award;
(4) That there was not sufficient competent evidence in the record to warrant the making of the award.
§ 287.490, RSMo 1986.
The administrative law judge (AU) found that Haynes did not sustain an injury arising out of and in the course of his employment. He carefully observed Haynes and listened to his testimony, comparing it with the statements Haynes had made to others prior to trial. On page 4 of his Findings of Fact and Rulings of Law, the ALJ stated, “I find the claimant’s testimony wholly without credibility and unworthy of belief.” Commissioner Daugherty went on to say:
The claimant’s statements to others and the medical records indicate that immediately after the injury and for several days thereafter he did not know how he fell, did not know what had ha-ppened and that he passed out. Only after several days did he begin to conform his story to a valid definition of an accidental injury; moreover, no one saw the incident which caused the injury and both the claimant and his friend, Eddie Salter, testified unreliably on this point (emphasis added).
The aforementioned findings of the AU, which were reviewed and adopted by the Commission, are findings of fact, as they concern the credibility of witnesses and the believability of their respective testimonies concerning how Haynes was actually injured. Kite v. Polsky Motors, Inc., 614 S.W.2d 294, 299 (Mo.App.1981); Page v. Green, 686 S.W.2d 528, 530 (Mo.App.1985). There were no eye witnesses to the injury and therefore Haynes’ claim hinges solely upon whether or not his testimony is believable.
The AU and the Commission have already held that Haynes’ inconsistent and contradictory testimony as to how he may possibly have been injured was “wholly lacking credibility and unworthy of belief.” These factual findings, if supported by sufficient competent evidence, may not be set aside by this Court. Kite, 614 S.W.2d at 299-300; Page, 686 S.W.2d at 530. Accordingly, the focus of inquiry of this Court should be whether or not there is sufficient competent evidence in the record to support the factual findings by both the AU and the Commission that Haynes’ testimony was unworthy of belief and that he did not sustain his burden of showing that he suffered an injury by an accident arising out of or in the course of his employment.
This Court will note, as did the Commission, that Haynes gave contradictory accounts about how he may have been injured. There was the initial history taken from Haynes at the Lee’s Summit Community Hospital by Nurse Alexander. This history was recorded in the Emergency Room records which were offered and received into evidence. This history indicated *406that the patient “passed out and fell over pot of boiling water.”
Consistent with the aforementioned history that Haynes gave to Nurse Alexander was the accident report which Haynes read and signed, and which stated that Haynes, “Bent over to remove piece of meat from tub. Raised up and last he remembers.” This accident report was also offered and received into evidence.
Additionally, there was the sworn testimony of Dr. Hall, a psychiatrist, who interviewed Haynes at the hospital several weeks after his injury. Dr. Hall testified that Haynes told him that he had no recollection whatsoever of the accident or how he was burned.
Finally, there was the statement that Haynes gave to Nurse McCarthy at Shawnee Mission' Medical Center several weeks after the accident which was recorded in the medical records, and offered and received into evidence. According to these records Haynes told the nurse that, “he almost died from an O.D. [sic] and was seriously hurt on his job. This accident resulted in his coming into treatment.”
Haynes testified at trial that he deliberately lied to the paramedics, Nurse Alexander, Dr. Hall and others and that he now remembers that both feet slipped out from under him causing him to fall and strike his head.
The AU went on to state that he observed Haynes’ friend, Eddie Salter, whose house Haynes was inside during his series of intravenous cocaine injections, and who drove Haynes to work. The AU found that Salter, “testified unreliably” on the issue of Haynes’ condition prior to being found unconscious on the plant floor.
In summary, there was sufficient competent evidence to support the AU and Commission’s factual findings that Haynes’ testimony was not believable and these factual findings should not be set aside by this Court.
To be entitled to benefits under the Missouri Workers’ Compensation Law, the employee must show that his injury was the result of an accident arising out of and in the course of his employment. Garrett v. Industrial Commission, 600 S.W.2d 516, 518-19 (Mo.App.1980). Thus, the burden was on Haynes to establish that he had an accident and that the accident arose out of and in the course of his employment.
Although the law, with respect to what constitutes an accident, has become more liberal since Wynn v. Navajo Freight Lines, Inc., 654 S.W.2d 87 (Mo. banc 1983), the courts have not completely disregarded the requirement that the employee has the burden of establishing, as a threshold requirement, that he, in fact, had an accident.
Missouri courts have long held that if an injured employee is intoxicated at the time of .his injury to the extent that he cannot physically and mentally perform his job duties, then his claim is to be denied. Phillips v. Air Reduction Sales Co., 337 Mo. 587, 85 S.W.2d 551 (Mo.1935); O’Neil v. Fred Evens Motor Sales Co., 160 S.W.2d 775 (Mo.App.1942).
The uncontradicted facts in this case are convincing and compelling. Haynes was a cocaine addict, and he intravenously injected cocaine repeatedly into his veins up and until several hours before reporting to work. In addition, he did not take nourishment nor did he sleep the night prior to his injury. He was seen stumbling around, falling to his hands and knees, and was carried back to Salter’s car. The testimony of Mr. Jamison, an unbiased, independent Union co-employee, was that Haynes, “looked out of his mind, it would have been impossible for him to work that morning.” Cocaine, in the quantitative amount of 2.8 micrograms per milliliter, was found to be present in Haynes’ urine and Dr. Oxley, a board certified pathologist, testified that given this high dosage, it would have been impossible for Haynes to have been performing his work duties. Finally, there were Haynes’ statements made prior to trial in which he stated that he did not remember what had happened.
In O’Neil, an employee was found unconscious next to his car with the engine running. At trial, the employee testified that his foot slipped off the clutch, the car *407jerked and he fell on his left side and head rendering him unconscious. It was established on cross-examination that the employee had told doctors and other witnesses that he had no specific recollection of how the injuries occurred. The Court of Appeals in O’Neil denied the claim and held that the claimant had not met his burden of establishing that his injuries arose out of and in the course of his employment. Id. at 780.
The similarities between O’Neil and the instant case are obvious. In both cases, there were no witnesses, and the employee had given conflicting stories of how he was injured. In fact, the only difference between O’Neil and the instant case is that in the instant case, a witness, Jim Jamison, actually saw Haynes prior to his injury and testified to his drugged condition. Mr. Jamison’s testimony was then corroborated by Dr. Oxley and another co-employee, Melody Pease, who stated that Haynes had not rinsed out any of the chili tubs in the chili room even though he had been somewhere on the premises for approximately an hour and a half.
After the claimant’s ease was heard and taken under advisement, claimant sought to reopen the case to present new evidence. This so-called new evidence was the testimony of two co-workers (husband and wife) regarding claimant’s physical condition immediately prior to the accident. This request was properly denied because with reasonable diligence claimant could have and should have been able to produce this evidence at his hearing as required by the Code of State Regulations Title 8, 20-8.-030(2). The accident occurred on April 19, 1986. His hearing was February 2 and 3, 1987. There was adequate time for him to prepare his case including the presentment of these witnesses.
In summary, there was sufficient competent evidence for the Commission to find that Haynes was so intoxicated by the intravenous use of narcotics that it would have been impossible for him to perform his work duties, and therefore, his injury did not occur by accident arising out of and in the course of his employment.
Accordingly, the judgment of the Commission is affirmed. Claimant is denied worker’s compensation benefits.
KENNEDY, C.J., dissents in separate opinion.
. 1 A. Larson, Larson’s Workmen’s Compensation Law, §§ 12.00-12.11 (1985).