LAY, Chief Judge.
Carolyn L. Nimick appeals from an order of the district court
affirming the Secretary of Health and Human Services’ (the Secretary) denial of Ms. Nimick’s application for social security benefits. The district court found that there was substantial evidence on the record as a whole to support the AU’s finding that Ms. Nimick was not disabled and was, therefore, not entitled to benefits. On appeal, Ms. Nimick argues that the district court erred in affirming the Secretary’s denial of benefits. For the reasons set forth below, we reverse and remand to the Secretary for further proceedings consistent with this opinion.
Background
Carolyn Nimick is a 49 year old woman, 5'8" and 243 lbs, with a ninth grade education. She filed this application for benefits on July 9, 1986, alleging that she had become disabled in 1979. Her application was administratively denied. She thereafter requested a hearing. In a decision issued September 16, 1987, the AU found that Ms. Nimick was capable of performing her past relevant work as a “machine operator” and was not disabled within the meaning of the Social Security Act. The Appeals Council denied her request for review and the district court affirmed the denial of benefits.
Discussion
The Social Security Act defines disabled as the “inability to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to * * * last for a continuous period of not less than 12 months.” 42 U.S.C. § 423(d)(1)(A) (1982);
see also
42 U.S.C. § 1382c(a)(3)(A) (1982). In determining whether an individual is disabled within the meaning of the Act, the Secretary has established a five step sequential evaluation process,
Bowen v. City of New York,
476 U.S. 467, 470-71, 106 S.Ct. 2022, 2024-25, 90 L.Ed.2d 462 (1986), under which the AU must make specific findings. If a claimant is found to be disabled or not disabled at any step in the sequential process, the AU need not proceed further. 20 C.F.R. §§ 404.1520(a), 404.920(a) (1988).
The AU found that Ms. Nimick was capable of performing her past relevant work of a machine operator and denied her benefits. On appeal, the claimant asserts: (1) that the record does not support a finding that Ms. Nimick could perform her past relevant work; (2) the AU erred by failing to call a vocational expert; (3) the AU's consideration of Ms. Nimick’s subjective complaints of pain was inadequate; and (4) the AU failed to consider the combined impact of all of Ms. Nimick’s impairment. We address only the first issue.
In concluding that Ms. Nimick could perform her past relevant work, the AU found:
Thus, while the evidence of record reveals that the claimant may not be able to perform jobs requiring extensive variety of technical complex job instructions due to her borderline intellectual functioning, there is no showing that the claimant could not perform light work that is less demanding or stressful. Testimony at the hearing as well as the evidence of record reveals that the claim
ant last worked as a machine operator which was sedentary in nature and did not require lifting more than 20 pounds. Clearly, the evidence of record establishes that the claimant has the residual functional capacity to perform such activities.
Record at 18.
Step four of the sequential evaluation process requires the AU to determine whether the claimant is capable of performing her past relevant work. If step four is reached, as it was in this case, the AU is required to evaluate the claimant’s ability to perform her past relevant work under the following guidelines:
(e) Your impairment(s) must prevent you from doing past relevant work. If we cannot make a decision based on your current work activity or on medical facts alone, and you have a severe impairments),
we then review your residual functional capacity and the physical and mental demands of the work you have done in the past.
If you can still do this kind of work, we will find that you are not disabled.
20 C.F.R. §§ 404.1520(e) and 416.920(e) (1988) (emphasis added). This regulation anticipates that the AU will consider the claimant’s residual functional capacity (RFC) and the physical and mental demands of the work the claimant has done in the past. The Social Security Administration (SSA) has issued rulings which interpret the federal regulations and under these rulings and the above cited regulation, the AU has a duty to
fully
investigate and make
explicit
findings as to the physical and mental demands of a claimant’s past relevant work and to compare that with what the claimant herself is capable of doing before he determines that she is able to perform her past relevant work.
Although Ms. Nimick’s past work record is at best inconsistent, she has had a number of jobs over the past twenty years. These include: (1) a machine operator at Timex during 1969-70 for seven months; (2) an employee at a bag company during 1970 for seven months; (3) a waitress during 1970-71 for twelve to eighteen months; (4) a nurse’s aid at a nursing home during 1972-73 for eleven months; (5) a housekeeper at a private residence during 1978-79 for four months; (6) an employee at a bakery outlet store during 1982 for four months.
We must analyze the record in light of the AU’s finding that Ms. Nimick is able to perform work as a machine operator.
The record fails to support this finding. The evidence contained in the record regarding the physical and mental demands required of a “machine operator” as per
formed by Ms. Nimick, is totally deficient. Further, there is no evidence that the ALJ solicited any evidence as to the functional demands and job duties of the occupation as generally required by employers throughout the national economy.
The record provides only a fleeting insight as to what demands are placed on a machine operator as performed by Ms. Nimick. The first is found in her testimony at the hearing:
Q. I neglected to ask you about your work at Timex. You made mention that that was in ’69 and ’70 on the note. What did you do at Timex?
A. I run [sic] 7 different types of machinery in (inaudible).
Q. Not all at the same time? One at a time?
A. I worked 4 at one time, Your Honor. One right after the other.
Q. And, was this a stand up or a sit down job?
A. It was a sit down job.
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LAY, Chief Judge.
Carolyn L. Nimick appeals from an order of the district court
affirming the Secretary of Health and Human Services’ (the Secretary) denial of Ms. Nimick’s application for social security benefits. The district court found that there was substantial evidence on the record as a whole to support the AU’s finding that Ms. Nimick was not disabled and was, therefore, not entitled to benefits. On appeal, Ms. Nimick argues that the district court erred in affirming the Secretary’s denial of benefits. For the reasons set forth below, we reverse and remand to the Secretary for further proceedings consistent with this opinion.
Background
Carolyn Nimick is a 49 year old woman, 5'8" and 243 lbs, with a ninth grade education. She filed this application for benefits on July 9, 1986, alleging that she had become disabled in 1979. Her application was administratively denied. She thereafter requested a hearing. In a decision issued September 16, 1987, the AU found that Ms. Nimick was capable of performing her past relevant work as a “machine operator” and was not disabled within the meaning of the Social Security Act. The Appeals Council denied her request for review and the district court affirmed the denial of benefits.
Discussion
The Social Security Act defines disabled as the “inability to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to * * * last for a continuous period of not less than 12 months.” 42 U.S.C. § 423(d)(1)(A) (1982);
see also
42 U.S.C. § 1382c(a)(3)(A) (1982). In determining whether an individual is disabled within the meaning of the Act, the Secretary has established a five step sequential evaluation process,
Bowen v. City of New York,
476 U.S. 467, 470-71, 106 S.Ct. 2022, 2024-25, 90 L.Ed.2d 462 (1986), under which the AU must make specific findings. If a claimant is found to be disabled or not disabled at any step in the sequential process, the AU need not proceed further. 20 C.F.R. §§ 404.1520(a), 404.920(a) (1988).
The AU found that Ms. Nimick was capable of performing her past relevant work of a machine operator and denied her benefits. On appeal, the claimant asserts: (1) that the record does not support a finding that Ms. Nimick could perform her past relevant work; (2) the AU erred by failing to call a vocational expert; (3) the AU's consideration of Ms. Nimick’s subjective complaints of pain was inadequate; and (4) the AU failed to consider the combined impact of all of Ms. Nimick’s impairment. We address only the first issue.
In concluding that Ms. Nimick could perform her past relevant work, the AU found:
Thus, while the evidence of record reveals that the claimant may not be able to perform jobs requiring extensive variety of technical complex job instructions due to her borderline intellectual functioning, there is no showing that the claimant could not perform light work that is less demanding or stressful. Testimony at the hearing as well as the evidence of record reveals that the claim
ant last worked as a machine operator which was sedentary in nature and did not require lifting more than 20 pounds. Clearly, the evidence of record establishes that the claimant has the residual functional capacity to perform such activities.
Record at 18.
Step four of the sequential evaluation process requires the AU to determine whether the claimant is capable of performing her past relevant work. If step four is reached, as it was in this case, the AU is required to evaluate the claimant’s ability to perform her past relevant work under the following guidelines:
(e) Your impairment(s) must prevent you from doing past relevant work. If we cannot make a decision based on your current work activity or on medical facts alone, and you have a severe impairments),
we then review your residual functional capacity and the physical and mental demands of the work you have done in the past.
If you can still do this kind of work, we will find that you are not disabled.
20 C.F.R. §§ 404.1520(e) and 416.920(e) (1988) (emphasis added). This regulation anticipates that the AU will consider the claimant’s residual functional capacity (RFC) and the physical and mental demands of the work the claimant has done in the past. The Social Security Administration (SSA) has issued rulings which interpret the federal regulations and under these rulings and the above cited regulation, the AU has a duty to
fully
investigate and make
explicit
findings as to the physical and mental demands of a claimant’s past relevant work and to compare that with what the claimant herself is capable of doing before he determines that she is able to perform her past relevant work.
Although Ms. Nimick’s past work record is at best inconsistent, she has had a number of jobs over the past twenty years. These include: (1) a machine operator at Timex during 1969-70 for seven months; (2) an employee at a bag company during 1970 for seven months; (3) a waitress during 1970-71 for twelve to eighteen months; (4) a nurse’s aid at a nursing home during 1972-73 for eleven months; (5) a housekeeper at a private residence during 1978-79 for four months; (6) an employee at a bakery outlet store during 1982 for four months.
We must analyze the record in light of the AU’s finding that Ms. Nimick is able to perform work as a machine operator.
The record fails to support this finding. The evidence contained in the record regarding the physical and mental demands required of a “machine operator” as per
formed by Ms. Nimick, is totally deficient. Further, there is no evidence that the ALJ solicited any evidence as to the functional demands and job duties of the occupation as generally required by employers throughout the national economy.
The record provides only a fleeting insight as to what demands are placed on a machine operator as performed by Ms. Nimick. The first is found in her testimony at the hearing:
Q. I neglected to ask you about your work at Timex. You made mention that that was in ’69 and ’70 on the note. What did you do at Timex?
A. I run [sic] 7 different types of machinery in (inaudible).
Q. Not all at the same time? One at a time?
A. I worked 4 at one time, Your Honor. One right after the other.
Q. And, was this a stand up or a sit down job?
A. It was a sit down job. I have to get up.
Q. I understand you had to move from chair to chair.
A. Yes sir.
Q. But, while you were operating the machinery you were sitting down.
A. Yes sir.
Q. Any heavy lifting involved?
A. No sir, none there.
Record at 63.
The second record regarding the demands of Ms. Nimick’s former work as a machine operator is found in the SSA-3369-F6 forms she filled out in making her application for benefits.
See
Record at 106-09. They provide that she was required to walk up to 6-8 hours a day, stand 8 hours a day, and sit 7 hours a day. Clearly these are inconsistent with each other and it was appropriate for the ALJ to rely on Ms. Nimick’s testimony and conclude that her job at Timex was mainly a sitting job, but that it required her to move from machine to machine in order to operate them. The forms further provided, however, that she was required to bend “occasionally” to “frequently” and that she would at times be required to lift up to 20 lbs on a frequent basis. No evidence in the record contradicted these physical requirements.
This evidence was not sufficient to allow the ALJ to make a proper determination as to the physical and mental demands placed on a machine operator and whether Ms. Nimick was capable of performing this work. The ALJ’s discussion of the demands made of a machine operator lacks the specificity and full development and explanation the Social Security regulations and rulings discussed above require.
Second, the evidence contained in the record regarding Ms. Nimick’s capabilities is inconsistent with a finding that she is capable of performing her past work as a machine operator. Ms. Nimick testified that no “heavy lifting” was required at her prior work. The record, however, reveals that her past work as a machine operator required her to lift frequently up to 20 pounds. While Ms. Nimick may not define lifting 20 pounds as heavy, it still may be beyond what she can handle frequently and clearly exceeds the five to ten pounds Dr. Shotts found she was capable of lifting.
We suggest that if the evidence on the record was inadequate to make a proper determination, the AU should have referred to the DOT, requested information from Ms. Nimick’s former employer, or
conducted more extensive questioning of Ms. Nimick herself.
Third, the AU made no findings as to either the amount of stress involved in working as a machine operator or the amount of dust, pollution, or fumes a machine operator would have to endure. The AU’s conclusion that Ms. Nimick could perform this type of work must be evaluated in light of the evidence of her mental conditions that affect her work, and her suffering from allergies which may be aggravated by this type of work. Even if we agree with the AU that Ms. Nimick’s daily activities suggest she can do “light work,” that does not assist us in determining if she can perform as a machine operator if we do not know what the demands of that job are. Without a more detailed factual finding as to what Ms. Nimick will be exposed to, the AU’s conclusion is not supported by substantial evidence on the record as a whole. Conclusion
For fc.a reasons set forth above we reverse the district court’s order granting summary judgment to the defendant and remand this case back to the AU for further proceedings consistent with this opinion. On remand we direct the AU to make specific factual findings as to the physical and mental demands of whatever job Ms. Nimick is considered to be able to perform.
We also recommend that the AU clearly consider all of Ms. Nimick’s impairments, exertional as well as nonexertional, individually and in combination,
before a determination is made that she is able to perform her past work. If it is found that she has no past work experience, as suggested above, or that she is not capable of performing her past relevant work but is able to perform “light work”, then the burden shifts to the Secretary to show that Ms. Nimick is capable of performing work that exists in the national economy.
Jelinek v. Heckler,
764 F.2d 507, 511 (8th Cir.1985).
If that is the case, a vocational expert will be required under the guidelines set forth by the SSA regulations and this circuit’s case law.
Id.