OPINION
VOLINN, Bankruptcy Judge:The issue before us is whether a Chapter 11 debtor’s postbankruptcy earnings derived from services are subject to the claims of creditors despite the provisions of 11 U.S.C. § 541(a)(6) excluding such earnings from “property of the estate”.
I.
On July 21, 1980, the appellant, Edward R. Fitzsimmons, filed a voluntary petition under Chapter 11 of the Bankruptcy Code. The debtor is a lawyer practicing in Oakland, California. He remained in possession of his assets and practice until October 22, 1980, when the court, upon application of the creditors’ committee, entered an order appointing a trustee. That order was supplemented by another order entered November 18, 1980, which imposed restraints upon the operation of the debtor’s law practice. The latter order asserts the court’s jurisdiction and control over all funds received from the debtor’s law practice. One of its provisions allows the debtor payment from earnings of the law practice, not to exceed $3,500 per month for personal living expenses.
On November 26, 1980, the debtor filed a motion seeking modification of the order of November 18, 1980. The proposed modification would have permitted the debtor to retain all postbankruptcy earnings of his law practice. On January 8, 1981, the court entered an order denying debtor’s motion. In that order, the bankruptcy court concluded:
“. . . as a matter of law, that earnings of the debtor’s law practice, whether generated by services performed before or after the date of filing the petition herein, and whether those services were performed by the debtor himself or by employees of said practice, constitute property of the estate herein, to be held by the trustee.”
II.
The trustee-appellee centers his case on 11 U.S.C. § 1108 which authorizes him to operate the debtor’s business. He contends that, since he is operating the business, he is entitled to its proceeds; stating: “It would make little sense to allow the debtor to receive those very proceeds for his own benefit, without benefit to the estate.” While there is an appearance of logic to such a position, it fails to take into account the basic orientation of Chapter 11 and its relationship to § 541.
Chapter 11 is a descendant of Chapter X, dealing with corporate reorganization, Chapter XII, dealing with real estate arrangements, and Chapter XI, dealing generally with arrangements. These chapters necessarily or practically involved property owned by the debtor at the time of bankruptcy — or income derived from that property. The only chapter of the former Bankruptcy Act involving post-bankruptcy earn*239ings for services by an individual debtor was Chapter XIII dealing with wage-earners which has now, as Chapter 13, been enlarged to include self-employed individuals with regular income. The essential issue is whether Chapter 11 can, as does Chapter 13, place an individual debtor’s post-bankruptcy earnings from services within the reach of the estate and its creditors. This, in turn, involves an examination of what becomes property of the estate.
III.
Chapters 1, 3, and 5 (which includes § 541) of the Code apply to cases filed under Chapters 7, 11, or 13. 11 U.S.C. § 103(a)(1). This section states that “(a) The commencement of a case under Section 301, 302 or 303 of this title creates an estate.” Thus, in any of said chapters, the definition of the estate, the property which it includes, and its creation are encompassed by § 541 unless specifically altered by a section of the applicable chapter.
The definition of property interests which are part of the debtor’s estate under § 541 is specific and extensive. § 541(a)(6) provides that the estate includes certain post-bankruptcy accruals to property with a significant exception:
“Proceeds, product, offspring, rents and profits of or from property of the estate, except such as are earnings from services performed by an individual debtor after commencement of the case.” (Emph. supp.)
One would assume, given the clarity and specificity of the exception and provision for its application to Chapter 11, that if it is to be modified, the modification would be commensurately explicit. Such a modification has been made in Chapter 13, § 1306, which modifies § 541(a)(6):
“(a) Property of the estate includes, in addition to the property specified in section 541 of this title—
* * * * * *
(2) Earnings from services performed by the debtor after the commencement of the case but before the case is closed, dismissed or converted to a case under chapter 7 or 11 of this title, whichever occurs first.”
While it may be contended that because of the prospective character of Chapter 13, the change was necessary, it cannot be gainsaid that where a change was required, the drafters knew how to make the change and did so. The specific provision for this alteration in Chapter 13 demonstrates that had the same exception been desired in Chapter 11, it could have been similarly stated.
IV.
The provisions of Chapter 11 relating to property of the estate give no support to reading § 1108 as requiring neutralization of the exception in § 541(a)(6).
The essential purpose of Chapter 11 is to provide a plan which will be acceptable to creditors, 11 U.S.C. § 1123. This section does not require the submission of § 541(a)(6) post-bankruptcy earnings to creditors. Indeed, it provides that the debt- or may retain “all or any part of the property of the estate.” 11 U.S.C. § 1123(a)(5)(B). Section 1123(a)(5)(D) provides for sale or distribution “of all or any part of the property of an estate.” The property referred to is necessarily defined by § 541. It is not reasonable to conclude that, without expressly so stating, as it did in § 1306, Congress intended that the foregoing language would not carry with it the exception to § 541(a)(6).
There are further contra-indications to any intention that post-bankruptcy earnings be involuntarily submitted to creditors. § 1112(d)(1) provides that a case under Chapter 11 may be converted to a case under Chapter 13 (the purpose of which is to submit post-bankruptcy earnings) “only if. . . the debtor requests such conversion ...” If not, Chapter 7, where § 541(a)(6) applies, would be the alternative.
It should also be noted that Chapter 11 proceedings may be involuntarily commenced, 11 U.S.C. § 303. In such a case, the debtor may not convert to Chapter 7, *240§ 1112(a)(2). If the trustee’s position is correct, application of § 1108 in such event would involuntarily subject the debtor’s post-bankruptcy earnings to the trustee’s reach despite § 541(a)(6). Conversely, a debtor who files under Chapter 7, anticipating the benefit of § 541(a)(6), could be involuntarily propelled into Chapter 11 by virtue of § 706(b) which provides that “on request of a party in interest and after notice and a hearing, the court may convert a case under this chapter to a case under chapter 11 of this title at any time.” However, because of concern that post-bankruptcy earnings may not be involuntarily impounded, § 706(c) provides: “The court may not convert a case under this chapter to a case under chapter 13 of this title (where § 541(a)(6) has been modified) unless the debtor requests such conversion.” It is not likely that it was intended that a debtor’s future income would be subject to involuntary conversion in Chapter 11 but not in Chapter 13. Presumably, if Chapter 11 had stated the modification present in § 1306, an equivalent condition as to involuntary conversion from Chapter 7 to Chapter 11 would have been provided. There not having been such a modification, the voluntary reservation of § 706(c) as to Chapter 11 is not needed.
In sum, the application of § 541(a)(6) to Chapter 11, despite its involuntary character, affords the debtor a fresh start free of pre-bankruptcy debt. There is no reason, logically or practically, why § 541(a)(6) should not be as implicit in a voluntary case as it would be in an involuntary one.
CONCLUSION
The consistency of the foregoing provisions of the Bankruptcy Code demonstrate implementation of a policy designed to prevent involuntary submission to the bankruptcy estate of post-petition earnings from services of an individual. This is consonant with the spirit, if not the letter, of the Thirteenth Amendment to the United States Constitution prohibiting involuntary servitude.
We REVERSE the decision of the trial court, insofar as it holds that post-bankruptcy earnings from services performed by an individual debtor are property of the estate in a Chapter 11 case.