Opinion by Judge PAEZ; Dissent by Judge BEEZER.
PAEZ, Circuit Judge:
Allen Lingenfelter appeals the district court’s judgment affirming an Administrative Law Judge’s (“ALJ”) decision denying his applications for social security disability insurance benefits and supplemental security income under Titles II and XVI of the Social Security Act (“SSA”), 42 U.S.C. §§ 401-34, 1381-83f. Lingenfelter argues that substantial evidence does not support the ALJ’s decision because the ALJ improperly rejected his testimony as not credible. We have jurisdiction pursuant to 28 U.S.C. § 1291, and we reverse the judgment of the district court with instructions to remand to the ALJ for the calculation and award of appropriate benefits.1
I. Background
A. Procedural History
On August 19, 1997, Lingenfelter filed applications for disability insurance benefits and supplemental security income, alleging that he had been disabled and unable to work since November 8, 1993 due to severe foot and knee impairments. After his applications were denied initially and upon reconsideration, Lingenfelter requested a hearing before an ALJ. At the January 4, 2000 hearing, Lingenfelter was represented by counsel and testified on his own behalf. The ALJ issued a decision denying Lingenfelter’s applications on March 22, 2000, finding that Lingenfelter suffered from multiple severe impairments but was not disabled within the meaning of the SSA. The Appeals Council denied Lin-genfelter’s request for review and adopted the ALJ’s decision as the final decision of the Commissioner on January 13, 2003.2 Lingenfelter then filed a complaint for review with the district court, which issued an order and judgment adopting the report and recommendation of a magistrate judge and affirming the ALJ’s decision. Lingenfelter timely appealed.
B. Facts
The parties do not dispute most of the relevant facts. Born on May 14, 1951, Lingenfelter was 48 years old at the time of his hearing before the ALJ. He had a high school education and worked most of his adult life as a construction worker, warehouse worker, and automobile detail-er. He first underwent surgery on his left knee in 1970. He suffered a work-related injury of the same knee on November 8, 1993, which has required multiple surger[1031] ies, including two knee arthroscopies in 1994 and 1996. About three years later, in November 1996, Lingenfelter started to experience significant pain in his left foot as well, and by 1997 he was experiencing severe pain in both feet.
1. Medical Reports
According to the medical reports in the administrative record, more than ten doctors, including two primary treating physicians, had examined or treated Lingenfel-ter prior to the hearing. The doctors had diagnosed Lingenfelter with, among other things, torn lateral and medial meniscae, significant advanced osteoarthritis, degenerative joint disease, post-polio syndrome, posterior tibial tendon rupture and tendinitis, and bilateral advanced arthrosis and planovalgus deformity.
After first injuring his left knee in 1993, Lingenfelter was examined by Doctors Tony M. Deeths and P.B. Johnson, who diagnosed osteoarthritis and cartilage damage. In February 1994, orthopaedic surgeon Marshall S. Lewis performed arthroscopic surgery on Lingenfelter’s knee, which revealed “torn medial and lateral menisci with osteoarthritis of the left knee and chondromalacia.” Later in 1994, following reports of continued swelling and locking of the left knee, Dr. Dilibeno examined Lingenfelter and found a “large erosive hole in the lateral tibial plateau extending down (through cartilage) to bone over the weight bearing area.” He also diagnosed degenerative joint disease and determined that Lingenfelter would need a total knee replacement. On the basis of similar findings in a February 1995 examination, Dr. Daniel N. Ovadia concluded that Lingenfelter could not return to his usual work and was precluded from any prolonged standing or walking.
In 1996, Lingenfelter started seeing the first of his two primary treating physicians, knee specialist Dr. James T. Caillouette. From 1996 to 1999, Dr. Caillouette consistently reported that Lingenfelter was in pain because of his knee and feet. Following diagnostic ar-throscopy, Dr. Caillouette determined that Lingenfelter’s knee had “complete lateral joint collapse with bone-on-bone in the lateral joint space and significant os-teophyte formation.” He concluded that Lingenfelter needed a total knee replacement (arthroplasty) because of the severe pain. Dr. Caillouette also found that both of Lingenfelter’s feet had experienced significant atrophy, and prescribed him a wheelchair in 1997 to help alleviate the pain. In 1998, Dr. Caillouette reported that Lingenfelter’s left foot had completely collapsed. He also determined that Lingenfelter was “fully disabled from work” until he received appropriate treatment.
In 1997, Dr. Richard I. Woods examined Lingenfelter on behalf of the California Workers’ Compensation Appeals Board. Lingenfelter reported to Dr. Woods that he felt constant sharp pain in his knee and feet and that “his knee stiffens up and becomes more painful after sitting for about ten minutes or holding the knee in one position for about ten minutes.” Lin-genfelter also reported that, because of the pain, he was unable to perform any significant activities. Dr. Woods agreed with Dr. Caillouette that Lingenfelter needed a total knee arthroplasty, as radiographs revealed advanced osteoarthritis and significant atrophy of the left thigh. He also diagnosed degenerative disorder, bilateral tibial tendinitis and rupture, and advanced arthrosis of bilateral mid feet with loss of plantar arch and collapse of the left mid foot. Dr. Woods concluded that Lingenfel-ter was limited to semi-sedentary work, and even then would require the use of a cane to help alleviate pain.
[1032] In 1998, Dr. Roger Sung examined Lin-genfelter on behalf of the California Department of Social Services. Dr. Sung reported that “X-rays of the left knee show severe tricompartmental arthritis with significant loss of joint space both medially and laterally [along with] marked osteophyte formation.” He also diagnosed “significant left knee osteoarthritis and bilateral foot planovalgus deformity.” He concluded that Lingenfelter was limited in his ability to walk but could sit for a full day with appropriate breaks. Two other state agency doctors reviewed Lingenfel-ter’s medical records and made similar findings, concluding that he could “stand and/or walk at least two hours in an eight-hour workday; sit about six hours in an eight-hour workday; [and] had limited use of the left lower extremity ... and both feet.”
Also in 1998, Dr. Stuart A. Green examined Lingenfelter and reviewed his medical records and X-rays for the Workers’ Compensation Appeals Board. Consistent with the medical record, Dr. Green reported bilateral foot and gait deformities, absent or weak tibialis posterior function, and knee atrophy, swelling, and pain. He also agreed that Lingenfelter would require knee surgery, either immediately or in the near future. Contrary to the earlier reports, however, he concluded that Lingen-felter’s lower extremity impairments were the result of post-polio syndrome, “a late manifestation of poliomyelitis that affects middle age individuals.” As Dr. Green reported:
What surprised me as I went through the medical records in this case is that no practitioner seems to have focused attention on what seems to me a critical aspect of this applicant’s past history. Mr. Allen Lingenfelter, at the age of four, had severe poliomyelitis. He was in an iron lung for a while, and almost died.
In 1999, Lingenfelter began seeing his second primary treating physician, foot specialist Dr. Alexander Tischler. Dr. Tis-chler diagnosed “severe flatfoot deformity of both feet” and “arthritis of the tarsome-tatarsal joint,” and determined that triple arthrodesis surgery was “a medical necessity.” He also reported that Lingenfelter had severe knee and foot pain, which he stated “he could no longer live with.” Dr. Tischler concluded that Lingenfelter was “totally disabled ... and is really unable to do any work that requires any sitting or standing.” By July 2000, Dr. Tischler reported that Lingenfelter was “mostly in a wheelchair” and that bilateral casts were the only treatment that helped to reduce his pain.
Finally, in 2001, after Lingenfelter underwent the recommended triple arthrode-sis surgery, Dr. Ronald Smith diagnosed “status post hindfoot reconstruction with incomplete arthrodesis” and “severe pes planus with subtalar instability and rupture of the posterior tibial tendon.” In his description of Lingenfelter’s symptoms, Dr. Smith reported that some pain and swelling were always present, that he elevated his feet for relief, and that he used a wheelchair and crutches as aids for walking. Dr. Smith concluded that these “symptoms are consistent with the examination findings, history, and radiograph,” and that Lingenfelter’s pain complaints were objectively reasonable. Dr. Smith at times reported that Lingenfelter was temporarily totally disabled, but at other times reported that he was able to do sedentary work.
2. Lingenfelter’s Testimony
At his hearing before the ALJ in January 2000, Lingenfelter testified that he had experienced constant pain since 1993, along with regular cramping, swelling, and [1033] fatigue. He described the pain in his left knee as moderate to severe but stated that “it’s my feet that hurt so bad,” as if “somebody [were] sticking a knife in them, and putting electricity in them, these shocks I get, are just unbelievable.” He further testified that, because of the pain and fatigue, he could only stand for 20 minutes or sit for 15-20 minutes at a time, and had to lie down at least three times a day for 30-45 minutes. He also testified that he needed to keep his legs elevated every day, even while sitting, and that the pain affected his ability to sleep.
With regard to treatment, Lingenfelter stated that he took Vicodin three times a day for pain, as prescribed by Dr. Tischler, and sought relief from severe pain by soaking his feet in buckets of ice or a bath tub filled with Epsom salt and hot water. He testified that he almost always used the cane that Dr. Caillouette prescribed in 1996, but only sometimes used crutches because they hurt his arms, and was unable to use a wheelchair because his insurance refused to approve the prescription from Dr. Caillouette. At the time of the hearing, Lingenfelter was also wearing a cast that Dr. Tischler prescribed for his right foot, but had not yet undergone the triple arthrodesis or total knee arthro-plasty. He testified that he wanted to have the surgeries, which he hoped would alleviate his pain and swelling, but that his insurance company had not authorized them.
Lingenfelter testified that pain severely limited his daily activities. He stated that he had difficulty showering, could not do yard work or a lot of driving, and usually had other people shop for him, since he was otherwise able to shop for only a few things at a time. Likewise, he stated that he had trouble finishing tasks generally, because he could not sit or stand for long. He testified that he occasionally watched his daughter play sports, but that it was difficult for him because of his knee and feet.
Finally, Lingenfelter testified that he lived in a room that he rented at a friend’s house and had not worked since his injury in 1993, except for a nine week period starting in February 1999. He stated that at that time he took a job washing tour buses because he had “no money, no income at all.” He testified that he could not perform that work again and that he only did so then because he “just didn’t have any money” and “had to do something to live.” He stated that he left the job after a week because a union job at a warehouse opened up. He was fired from that job after eight weeks, however, because he was too slow to do the work adequately. He also testified that when he returned home from work each day his “feet were so swollen,” and that he “just couldn’t do it anymore” because of the pain.
C. ALJ Decision
In denying Lingenfelter’s applications, the ALJ applied the five-step disability evaluation process set forth in 20 C.F.R. § 404.1520. See Lester v. Chater, 81 F.3d 821, 828 n. 5 (9th Cir.1995) (describing the five-step process). Because Lingenfelter’s disability insurance lapsed on June 30, 1998, he had to establish that he was disabled for at least a twelve-month period between the alleged onset date, November 8, 1993, and June 30, 1998 (the “relevant time period”).3 See Reddick v. Chater, 157 [1034] F.3d 715, 721 (9th CSr.1998) (“To qualify for disability benefits, a claimant must show that a medically determinable physical or mental impairment prevents her from engaging in substantial gainful activity and that the impairment is expected to result in death or to last for a continuous period of at least twelve months.”) (citing 42 U.S.C. § 423(d)(1)(A)).
The ALJ found, and the parties do not dispute, that Lingenfelter passed the hurdles set at steps one and two of the five-step process, because he was not then engaging in substantial gainful activity and he suffered from a number of severe impairments, including “degenerative joint disease of the left knee, status post multiple surgeries, and post-polio syndrome.”4 The ALJ also found, however, that Lingen-felter was not automatically presumed disabled at step three, because his condition did not meet or equal any of the impairments listed in 20 C.F.R., Pt. 4, Subpt. P, App. I.5 The ALJ’s decision that Lingen-felter was not disabled therefore turned on his assessment in between steps three and four of Lingenfelter’s residual functional capacity (“RFC”), and application of this RFC assessment at steps four and five. See 20 C.F.R. § 404.1520(4) (“Before we go from step three to step four, we assess your residual functional capacity.... We use this residual functional capacity assessment at both step four and step five when we evaluate your claim at these steps.”).
In assessing Lingenfelter’s RFC, the ALJ found that Lingenfelter retained the capacity to “lift 20 pounds occasionally and 10 pounds frequently” and “stand and/or walk at least 2 hours ... [and] sit 6 hours in an 8-hour workday,” but was “unable to perform repetitive squatting, kneeling, crawling, or crouching” and “requirfed] the use of a cane for standing and walking ... [and] the option to stand every 30 minutes for a period of 1-2 minutes in order to regain circulation and relieve discomfort.” Although the ALJ recognized that Lingen-felter testified to additional limitations that would establish a significantly lower RFC, he rejected this testimony as not “totally credible.” Specifically, the ALJ found that Lingenfelter’s subjective complaints were only “credible to the extent that he has required a cane and some accommodation with regard to his complaints of cramping and poor circulation in his lower extremities.” The ALJ provided two reasons for this adverse credibility finding: (1) “the consensus of medical opinion in the record essentially supports a residual functional capacity for sedentary work”; and (2) Lin-genfelter’s nine weeks of work in 1999 “cast significant doubt upon [his] allegation of an inability to perform any work at all.”
On the basis of this RFC assessment and the testimony of a vocational expert, the ALJ found at step four that Lingenfel-ter was not capable of performing any of his past relevant work as a construction worker, warehouse worker, or automobile detailer. The ALJ therefore proceeded to step five, where he determined that Lin-genfelter was not disabled because he re[1035] tained the capacity to perform other work that existed in sufficient numbers in the national economy. In making this determination, the ALJ posed to a vocational expert both a hypothetical question based on the RFC that he assigned to Lingenfel-ter and hypothetical questions that included the additional limitations testified to by Lingenfelter. In response, the vocational expert testified that a person with the RFC assigned by the ALJ could perform almost a full range of sedentary work, but that sufficient jobs did not exist even at the sedentary level for a person with the additional limitations testified to by Lin-genfelter. The expert testified that if an employee needed to lie down two or three times a day for up to 45 minutes, as Lin-genfelter testified was necessary, that “essentially would eliminate any of the positions described, and in fact any of the positions at the sedentary level.”6
II. Analysis
We review de novo a district court’s judgment upholding the denial of social security benefits. Reddick, 157 F.3d at 720. “We may set aside a denial of benefits only if it is not supported by substantial evidence or is based on legal error.” Robbins v. Soc. Sec. Admin., 466 F.3d 880, 882 (9th Cir.2006). “Substantial evidence” means more than a mere scintilla, but less than a preponderance; it is such relevant evidence as a reasonable person might accept as adequate to support a conclusion. Id. If the evidence can reasonably support either affirming or reversing a decision, we may not substitute our judgment for that of the Commissioner. Id. However, we must consider the entire record as a whole, “weighing both the evidence that supports and the evidence that detracts from the Commissioner’s conclusion,” Reddick, 157 F.3d at 720, and “may not affirm simply by isolating a specific quantum of supporting evidence.” Hammock v. Bowen, 879 F.2d 498, 501 (9th Cir.1989) (internal quotation marks omitted).
Lingenfelter argues that substantial evidence does not support the ALJ’s decision because the ALJ improperly rejected his testimony as to the severity of his pain and symptoms. We agree. As we explain below, the ALJ failed to provide clear and convincing reasons for finding Lingenfel-ter’s alleged pain and symptoms not credible, and therefore was required to include these limitations in his assessment of Lin-genfelter’s RFC. Because the ALJ clearly did not do so, substantial evidence does not support the ALJ’s RFC assessment or step-five determination that Lingenfelter was not disabled. To the contrary, the vocational expert’s testimony that sufficient jobs did not exist for a person with the limitations testified to by Lingenfelter required a finding at step five that Lingen-felter was disabled during the relevant time period. Consequently, further administrative proceedings are unnecessary, and Lingenfelter is entitled to an award of appropriate benefits.
A. Credibility
To determine whether a claimant’s testimony regarding subjective pain or [1036] symptoms is credible, an ALJ must engage in a two-step analysis. First, the ALJ must determine whether the claimant has presented objective medical evidence of an underlying impairment “which could reasonably be expected to produce the pain or other symptoms alleged.” Bunnell v. Sullivan, 947 F.2d 341, 344 (9th Cir.1991) (en banc) (internal quotation marks omitted). The claimant, however, “need not show that her impairment could reasonably be expected to cause the severity of the symptom she has alleged; she need only show that it could reasonably have caused some degree of the symptom.” Smolen v. Chater, 80 F.3d 1273, 1282 (9th Cir.1996). “Thus, the ALJ may not reject subjective symptom testimony ... simply because there is no showing that the impairment can reasonably produce the degree of symptom alleged.” Id.-, see also Reddick, 157 F.3d at 722 (“[T]he Commissioner may not discredit the claimant’s testimony as to the severity of symptoms merely because they are unsupported by objective medical evidence.”).
Second, if the claimant meets this first test, and there is no evidence of malingering, “the ALJ can reject the claimant’s testimony about the severity of her symptoms only by offering specific, clear and convincing reasons for doing so.” Smolen, 80 F.3d at 1281; see also Robbins, 466 F.3d at 883 (“[Ujnless an ALJ makes a finding of malingering based on affirmative evidence thereof, he or she may only find an applicant not credible by making specific findings as to credibility and stating clear and convincing reasons for each.”).
Here, the Commissioner concedes that Lingenfelter met the requirement at step one, by providing evidence of underlying impairments that could reasonably be expected to produce some degree of the pain and symptoms alleged. Also, at step two, the ALJ found that there was “no evidence of malingering.” The ALJ nonetheless found, however, that Lingenfelter’s testimony was credible only to the extent that he testified that he needed a cane and some accommodation for his cramping and poor circulation. As a result, the ALJ excluded from his RFC determination Lin-genfelter’s testimony that he could only stand or sit for about 15-20 minutes at a time, had to lie down for 30-45 minutes at least three times a day, and needed to keep his legs elevated every day, because of his constant severe pain.
We must therefore determine whether the ALJ provided clear and convincing reasons for this adverse credibility finding. As noted, the ALJ provided two reasons for the finding. First, the ALJ determined that Lingenfelter’s alleged symptoms, which would preclude even sedentary work, were contrary to a consensus of the medical opinion in the record that he retained the capacity for such work. Similarly, the ALJ determined that Lingenfel-ter’s ability to work for nine weeks in 1999 was inconsistent with the alleged severity of his symptoms.
We conclude that these reasons do not constitute clear and convincing reasons for rejecting Lingenfelter’s subjective pain and symptom testimony. The ALJ’s first reason provides no support for the credibility finding, because it is clear from the record that there was not in fact a consensus of medical opinion that Lingenfelter, contrary to his alleged pain and limitations, retained the capacity to perform sedentary work. The ALJ’s second reason, on the other hand, was factually accurate, as Lingenfelter did testify that he worked for a brief period of time in 1999. This reason in and of itself, however, is not a sufficient basis for the ALJ’s adverse credibility finding. That Lingenfelter, after the relevant time period during which he claimed to be disabled and facing difficult [1037] economic circumstances, tried to work for nine weeks and, because of his impairments, failed, is not a clear and convincing reason for concluding that his symptoms could not have precluded him from maintaining employment during the relevant time period.
1. Medical Opinion
Contrary to the ALJ’s determination, there was not a consensus of medical opinion that Lingenfelter retained the capacity to perform sedentary work, and therefore this reason does not support the ALJ’s credibility finding. In finding a consensus, the ALJ cited to the three state agency physicians, the two doctors who examined Lingenfelter for the California Workers’ Compensation Appeals Board, and Dr. Ovadia, who each made findings consistent with a capacity for sedentary work.7 Without explanation, however, the ALJ completely ignored the medical opinions of Lingenfelter’s two primary treating physicians, who expressly corroborated his alleged pain and limitations and found him incapable of any work.
As discussed in detail above, knee specialist Dr. Caillouette treated Lingenfelter for over three years. During this time, Dr. Caillouette reported that Lingenfelter had severe pain in his left knee and feet due to his numerous serious physical impairments, and prescribed him Vicodin, a cane, and a wheelchair for the pain. Dr. Caillouette expressly concluded that Lin-genfelter was “fully disabled from work” until he received appropriate treatment: total knee replacement surgery.8 Similarly, foot specialist Dr. Tischler treated Lin-genfelter for about two years and determined that he was “totally disabled” and “really unable to do any work that requires any sitting or standing.” Dr. Tis-chler also reported that Lingenfelter was “mostly in a wheelchair” by July 2000, and would be able to return to sedentary work only if his total knee replacement and triple arthrodesis surgeries were successful.
In light of these medical opinions, there was clearly no consensus that Lingenfelter could perform sedentary work. Rather, Doctors Caillouette and Tischler — the only reporting physicians who examined Lingenfelter on multiple occasions and treated his impairments9— [1038] expressly reached the opposite conclusion, that Lingenfelter could not perform any work. Consequently, the ALJ’s first reason for finding Lingenfelter’s testimony not credible is unfounded and does not provide any support for the adverse credibility finding.10
2. Work
To the contrary, the ALJ’s second reason for finding Lingenfelter’s testimony not credible was factually accurate, because Lingenfelter testified that he worked for a brief period of time in 1999. We conclude, however, that this alone is not a clear and convincing reason for rejecting Lingenfelter’s subjective pain and symptom testimony.
It does not follow from the fact that a claimant tried to work for a short period of time and, because of his impairments, failed, that he did not then experience pain and limitations severe enough to preclude him from- maintaining substantial gainful employment. Indeed, we have suggested that similar evidence that a claimant tried to work and failed actually supported his allegations of disabling pain. See Fair v. Bowen, 885 F.2d 597, 604 (9th Cir.1989) (affirming the ALJ’s finding that the claimant was not credible, but noting that the ALJ “could easily have relied on other ... evidence in the record to reach the opposite conclusion. Fair attempted to work in 1981, but testified that his pain forced him to stop.”); see also Rosario v. Sullivan, 875 F.Supp. 142, 146 (E.D.N.Y. 1995) (holding that substantial evidence did not support the ALJ’s decision that claimant was not disabled, in part because claimant’s unsuccessful work attempt weighed in favor of a disability finding); cf. Reddick, 157 F.3d at 722 (“Several courts, including this one, have recognized that disability claimants should not be penalized for attempting to lead normal lives in the face of their limitations.”).
This reason is especially unconvincing where, as the ALJ recognized here, the [1039] individual attempted to work “only because of extreme economic necessity.” Under these circumstances, it is at least as likely that the claimant tried to work in spite of his symptoms, not because they were less severe than alleged. As Lingenfelter testified, although he was able to work for a brief period of time, he attempted to do so because of his dire economic situation caused by almost six years of unemployment; and, even then, his impairments were severe enough that they prevented him from maintaining his employment.
Moreover, Lingenfelter’s failed work attempt did not even take place during the relevant time period. Lingenfelter had to prove that he was disabled for at least a twelve-month period between November 8, 1993 and June 30, 1998. His work attempt, however, as the ALJ observed, started in February 1999, “years after his injury and surgeries, thus, presumably, only after years of healing.” Thus, here, the work attempt provides even less support for rejecting Lingenfelter’s testimony that his subjective symptoms precluded him working during the relevant time period.
In so concluding, we also find significant that the Social Security Administration permits recipients of disability benefits to work on a trial basis without the trial work period adversely affecting their disability status. Specifically, when a recipient works for less than nine months, the Administration does not consider the trial work period as evidence that the individual is no longer disabled. See 20 C.F.R. § 404.1592; see also Moore v. Comm’r of the Soc. Sec. Admin., 278 F.3d 920, 924-25 (9th Cir.2002) (“[T]he SSA’s regulations provide for a ‘trial work period’ in which a claimant may ‘test your ability to work and still be considered disabled.’ ” (quoting 20 C.F.R. § 404.1592)). By analogy, if working for almost nine months is not evidence that a. disability benefit recipient is no longer disabled, then a nine week unsuccessful work attempt is surely not a clear and convincing reason for finding that a claimant is not credible regarding the severity of his impairments.
At least one of our sister circuits has also found the Administration’s treatment of trial work periods significant in reviewing the denial of disability benefits. In Parish v. Califano, the claimant had taken a job within the time period during which she needed to establish that she was disabled, but was asked to resign because “she could not work the hours.” 642 F.2d 188, 193 (6th Cir.1981). The ALJ “relied heavily on th[is] fact ... as substantial evidence that [the claimant] was not precluded from engaging in any substantial gainful activity” during the relevant time period. Id. at 192. The Sixth Circuit, however, looked for guidance in 20 C.F.R. § 404.1592: “[Services rendered during the trial work period are deemed not to have been rendered for the purpose of determining whether the individual’s disability ceased during such a period of trial work. It would appear reasonable to apply the same principle to an attempt to work before filing an application for benefits.” Id. at 193. As the Sixth Circuit therefore concluded, the “[approximately 32 weeks of work over more than eight years during which [claimant] has been suffering from [her impairment] can be characterized only as sporadic, not [as] ‘substantial gainful activity’ ... [, which] implies employment with some degree of regularity.” Id. at 192.
In sum, that Lingenfelter tried to work for nine weeks in 1999 and failed is not a clear and convincing reason for the ALJ’s finding that Lingenfelter was not credible when he testified about the pain and symptoms that precluded him from engaging in [1040] substantial gainful employment during the relevant time period.
3. Other Factors
Finally, we consider the ALJ’s proffered reasons in light of the other factors that we have found relevant in reviewing an ALJ’s credibility findings, and which the Social Security Administration also requires that ALJs consider in assessing credibility. These additional factors include: (1) whether the claimant engages in daily activities inconsistent with the alleged symptoms; (2) whether the claimant takes medication or undergoes other treatment for the symptoms; (3) whether the claimant fails to follow, without adequate explanation, a prescribed course of treatment; and (4) whether the alleged symptoms are consistent with the medical evidence.11 See Rollins, 261 F.3d at 857; Bunnell, 947 F.2d at 346; Fair, 885 F.2d at 602-03; see also S.S.R. 96-7p at 3-4 (Cum. Ed.1996), available at 61 Fed.Reg. 34,483, 34,485 (July 2, 1996) (requiring ALJs to consider “all of the evidence in the case record” in assessing a claimant’s subjective pain and symptom testimony, including: the “individual’s daily activities”; the “location, duration, frequency, and intensity of the pain or symptoms”; “[factors that precipitate and aggravate the symptoms”; the “type, dosage, effectiveness, and side effects” of any medications; any other treatment or measures used for relief; functional restrictions; and any other relevant factors).
All of these factors weigh in favor of Lingenfelter. Lingenfelter testified that he engaged in almost no recreational activities or hobbies and only limited household activities. He testified that he took prescription pain medicine twice a day, and the medical record established that he had undergone extensive additional treatment for his pain and symptoms, including physical therapy and multiple surgeries. Also, although Lingenfelter had not yet undergone the triple arthrodesis or total knee replacement surgeries at the time of the hearing, he underwent the triple arthrode-sis surgery shortly after the hearing. Further, Doctors Caillouette and Tischler confirmed in their reports that Lingenfel-ter’s insurance refused to authorize the recommended surgeries at least from 1996 to 2000. Finally, the only doctors who expressly assessed Lingenfelter’s reported symptoms concluded that they were reasonable in light of the objective medical evidence.
Thus, considering Lingenfelter’s brief, unsuccessful work attempt in light of the other factors relevant to his credibility, reinforces our conclusion that the work attempt alone is not a clear and convincing reason for the ALJ’s finding that Lingen-felter’s testimony about his pain and physical limitations was not credible.
B. RFC Assessment and Step-Five Determination
Because the ALJ did not provide clear and convincing reasons for excluding Lingenfelter’s pain and symptoms from his assessment of Lingenfelter’s RFC, substantial evidence does not support the assessment. See Robbins, 466 F.3d at 883 (“In determining a claimant’s RFC, ... ‘[c]areful consideration’ [must] be given to any evidence about symptoms ‘because subjective descriptions may indicate more severe limitations or restrictions than can be shown by medical evidence alone.’ ”) (quoting S.S.R. 96-8p at 5 (Cum. Ed.1996), available at 61 Fed.Reg. 34,474, 34,477 [1041] (July 2, 1996)). Nor does substantial evidence support the ALJ’s step-five determination, since it was based on this erroneous RFC assessment. See Gallant, 753 F.2d at 1456 (“Because ... the ALJ had no clear or convincing reasons for rejecting [claimant’s allegations of persistent disabling pain], claimant’s pain should have formed a part of the ALJ’s question to the expert.”); see also id. (“A hypothetical question should set out all of the claimant’s impairments.” (alteration and internal quotation marks omitted)).
In addition, we will not remand for further proceedings where, taking the claimant’s testimony as true, the ALJ would clearly be required to award benefits:
In cases where there are no outstanding issues that must be resolved before a proper disability determination can be made, and where it is clear from the administrative record that the ALJ would be required to award benefits if the claimant’s ... testimony were credited, we will not remand solely to allow the ALJ to make specific findings regarding that testimony. Rather, we will ... take that testimony to be established as true.
Varney v. Sec’y of Health & Human Servs., 859 F.2d 1396, 1401 (9th Cir.1988). Here, as in Varney, the ALJ posed to the vocational expert not only a hypothetical question based on the ALJ’s RFC assessment, but also hypothetical questions that incorporated the pain and physical limitations testified to by Lingenfelter. Although the ALJ later decided that these limitations were not credible, the vocational expert’s testimony establishes that taking Lingenfelter’s testimony as true, he was disabled. Dispositively, the vocational expert testified that, if an employee needed to lie down two or three times each day for up to 45 minutes, as Lingenfelter testified was necessary, this “essentially would eliminate any of the positions described, and in fact any of the positions at the sedentary level.” Cf. Gallant, 753 F.2d at 1454 (“A man who cannot walk, stand or sit for over one hour without pain does not have the capacity to do most jobs available in the national economy.”).
In sum, we conclude that the ALJ did not provide clear and convincing reasons for his adverse credibility determination. There was no consensus of medical opinion contrary to Lingenfelter’s testimony, and his failed work attempt alone is not a clear and convincing reason for rejecting his testimony, especially in light of the record as a whole. Further, because the vocational expert testified that Lingenfelter’s pain and physical limitations would eliminate any potential employment, further proceedings are unnecessary, and we reverse the judgment of the district court with instructions to remand to the ALJ for the calculation and award of benefits.12
REVERSED AND REMANDED.