¶1In this appeal from a divorce judgment ending his twelve and one-half year marriage to Donna Austin, Craig Austin challenges the award of alimony to Donna, arguing that the waiver of alimony provision contained in the parties’ antenuptial agreement (agreement) was valid when made and must be enforced.
¶21. Background facts and proceedings. When the parties met in 1984, Donna was employed in the fragrance department of a department store and Craig was working in his family produce business, Sun Valley Produce Co., Inc. (Sun Valley). Eventually, Donna and her daughter from a prior marriage moved in with Craig. In 1988, concerned that the relationship would not result in marriage, Donna and her daughter moved out. Donna and Craig continued to see each other, however, and in January, 1989, they became engaged.
¶3Not long before the May, 1989, wedding date, Craig informed Donna that he wanted her to sign an antenuptial agreement as a condition of his offer of marriage, expressing concern about “his business interests with his family.” Donna and Craig exchanged financial statements, which then became exhibits to the agreement. Craig’s financial statement disclosed assets, on which he placed a total value of close to one million dollars, that included a fifty percent interest in Sun Valley; his condominium; an interest in two other real estate parcels; a fifty percent interest in two businesses owned with his brother Steven — Austin Sportswear, Inc. (established in 1984), and T"Shirt Academy of Nantucket (which commenced operation in 1989); as well as bank accounts and other liquid investments, two expensive automobiles, furniture, and furnishings. Donna had a modest net worth (a ten year old car, jewelry and furs, and a small bank account).
¶4The agreement contains waivers of alimony by both parties.
¶5Donna was thirty-seven and Craig thirty-five years old when they were wed; each had been married once before. Following their marriage, the parties lived for a time in the Jamaica Plain section of Boston where, in April, 1991, their daughter was bom. In July, 1995, the family moved into a home they had built in East Sandwich on Cape Cod. This was the marital home at the time of the divorce. See note 2, supra. Craig continued to work at Sun Valley, but he also purchased and renovated a restaurant on the Cape, which commenced operation in December, 1999, as Amari’s Bar & Ristorante.
¶6Donna was employed outside the home for a brief period after the marriage. Following the birth of their daughter, the parties were in agreement that Donna should leave the workforce and become the primary caretaker of their daughter and a full-time homemaker.
¶7Donna initiated divorce proceedings in May, 2001, seeking an end to the marriage, custody of the parties’ minor child, support and alimony, and an equitable share of the marital estate. In his counterclaim, Craig sought enforcement of the parties’ agreement, custody of the minor child, and child support.
¶8A judge of the Probate and Family Court conducted a bifurcated trial, first considering evidence on the issue of the validity and enforceability of the antenuptial agreement. He concluded that provisions relating to property were valid but that the waiver of alimony provision was unfair and unreasonable when made and therefore not valid. The matter then proceeded to a trial on the merits of the divorce. Under the divorce judgment, Craig was assigned his separate property; the *722marital assets were apportioned between the parties.
¶92. Discussion, (a) Visitation. Under the divorce judgment, the parties have joint legal and shared physical custody of the minor child, “although the child shall reside primarily with [Donna] during the school year.” The judgment includes detailed orders governing the times the child will spend with each parent and provides that during the school year, she is to reside with Craig from Sunday at 9:00 a.m. to Monday at 7:00 p.m.; during the summer, the period is extended to Tuesday at 9:00 p.m. Holidays and school vacation periods are likewise provided for. Describing this arrangement as a “minimal visitation arrangement,” Craig argues that the findings do not support the custodial arrangements ordered by the judge.
¶10A trial court’s broad discretion to fashion an appropriate custody or visitation arrangement will not be disturbed on appeal unless clearly wrong. See Rolde v. Rolde, 12 Mass. App. Ct. 398, 391 (1981) (judge ruling on custody and visitation has opportunity to observe and appraise both parents; discretionary order awarding sole custody to wife was not “clearly wrong”). See also Youmans v. Ramos, 429 Mass. 774, 787 (1999) (best interests standard applicable to child custody arrangements is classic example of discretionary decision). As we discern no abuse of that discretion here, we affirm those portions of the judgment relating to the custodial arrangements of the child.
¶11(b) Validity of alimony waiver. Although the right to vary the property rights of spouses by premarital contract has long existed at common law, see French v. McAnarney, 290 Mass. *723544, 547 (1935),
¶12Massachusetts decisional law has consistently adhered to the view that “[mjamage is not a mere contract between two parties, but a legal status from which certain rights and obligations arise.” DeMatteo v. DeMatteo, 436 Mass. 18, 31 (2002), citing Frenchv. McAnarney, 290 Mass. at 546.
¶13Instead, whether an antenuptial agreement is valid will depend upon whether it was “fair and reasonable” when it was executed, in addition to factors not at issue here, such as whether it was voluntarily made or based upon full disclosure. DeMatteov. DeMatteo, supra at 32-33. In the context of assessing the validity of an antenuptial agreement, the provisions for alimony need not approximate an award made pursuant to factors set forth in G. L. c. 208, § 34, applicable upon divorce. DeMatteov. DeMatteo, supra at 31. Rather, the test is whether an agreement “essentially strips the contesting spouse of substantially all of her marital interests.”
¶14Alimony by its nature is a right that does not exist prior to *726marriage; in many cases, it also does not derive from the separate property of a wealthy spouse, compare Osbornev. Osborne, supra,but from income earned during the marriage. Such income, and any asset purchased with that income, is an asset of the marriage. See Yousif v. Yousif, 61 Mass. App. Ct. 686, 698 (2004). As such, alimony is unlike premarital property, and a waiver of the right to receive alimony is a waiver not of a present, known right, but of a future right, the value of which may not be ascertainable for many years to come.
¶15Because enforcement of a valid antenuptial agreement may not occur until long after it was entered into, it is all the more important that parties entering into such agreements make appropriate provision for support if, in the light of the known and anticipated circumstances, it would be fair and reasonable to do so should the marriage end in divorce.
¶16In so doing, we do not consider the circumstances at the time of the divorce, including whether either party has accumulated additional assets since the agreement was made. That inquiry occurs during the “second look” stage, when a court deciding whether and to what extent to enforce a valid term of the agreement must assess if it is “conscionable” to do so. DeMatteov. DeMatteo, 436 Mass. at 38.
¶17Whether a limitation on spousal support made prior to marriage was fair and reasonable when made must be determined with reference to the known circumstances of the parties at the time, as well as those circumstances reasonably foreseeable. See DeMatteov. DeMatteo, supra at 30, quoting from Rosenberg v. Lipnick, 377 Mass. 666, 672 (1979) (“the reasonableness of any monetary provision in an antenuptial contract cannot ultimately be judged in isolation”). See also note 14, supra.
¶18This is not to suggest that alimony waivers are per se unreasonable.
¶19Unlike the husband in Osborne, however, here there was nothing in the evidence to suggest that Donna would be in a position to reasonably support herself in the event of a divorce occurring well into the future. In this respect, the circumstances are more like those in DeMatteo, where (in relation to the husband’s wealth) the wife had been earning only a modest income of $25,000 a year as a secretary just prior to marrying the husband. 436 Mass. at 19-20. Under the terms of the De-Matteo antenuptial agreement, the wife was to receive one-half of the jointly held property at the time of divorce as well as housing and transportation; in addition, the husband was obligated to continue to provide for the wife’s health insurance and her support until her death or remarriage ($35,000 per year when the parties married in 1990, subject to annual cost of living adjustments to 1998, the date the husband filed for divorce). Id. at 20-21. The agreement took into account the wife’s age (forty-one years) and limited earning capacity, and anticipated that the wife would in all likelihood not be working during the marriage and thus would not be in a position to provide reasonably for her own support in the event of divorce. The agreement made reasonable provision for the wife’s support in the event of divorce, including alimony, in amounts that exceeded what she had been earning before the marriage; it fairly provided for cost of living increases to the alimony amount, adjusted annually to the date either party sought to end the marriage, to account for the effects of inflation. Id. at 22.
¶20*729Here, the judge assessed both the agreement’s validity as well as whether it was enforceable. These are distinct assessments to which, as clarified in DeMatteo, supra,different standards are applicable.
¶21*730The judge in this case determined that under the circumstances known and reasonably to be anticipated by the parties at the time of the execution of the agreement, the waiver of alimony provision was, as to Donna, neither fair nor reasonable when it was made. As reflected in the judge’s findings and the evidence from which they are drawn, the agreement strips Donna of all alimony rights despite the fact that she had no education beyond high school, had only been employed in entry level jobs when the parties met, and owned no property of value. That her contribution to the marriage would primarily be in the form of homemaking and child-rearing is evidenced by the fact that, immediately after the marriage, Donna commenced a year-long treatment for infertility that required Craig to give her injections on a regular basis, and as the probate judge found, it was by agreement of the parties that, after giving birth to their daughter, Donna became her primary caretaker and a full-time homemaker. In contrast, Craig was a business entrepreneur and had completed two years of college; he had for some time been employed in the family business, had started other businesses, and by the time of the marriage had already amassed assets on which he placed a value of close to one million dollars. He disclosed no interest in any family trusts at that time, and the sole source of his income was from employment. Based on this history at the time of the marriage, Craig’s reasonably anticipated role in the partnership was as the primary income-earner.
¶22As the judge found, it was reasonable for Craig to seek to protect his assets, including his interest in the family-owned business, from claims by Donna in the event of divorce (claims that might potentially also affect the interests of other family members). It was, however, unreasonable to expect that his spouse, who then had no assets and negligible earning capacity, would contribute to the marriage by raising his child and by supporting his ability to work outside the home, with no expectation of future support no matter how long the marriage, and regardless whether she might never acquire assets of her own.
¶23The probate judge applied the appropriate standard, and his conclusion that the waiver of alimony was neither fair nor *731reasonable at the time it was made is supported by the evidence. The judge did not err in concluding that the provision waiving alimony was invalid.
¶24(c) The alimony award. Having invalidated the alimony waiver as to Donna, the judge was next called upon to decide whether and in what amount Craig should pay alimony. The judge was not constrained, in these circumstances, to limiting the alimony award to an amount sufficient only to prevent her from “becom[ing] a public charge,” DeMatteov. DeMatteo, 436 Mass. at 35. Instead, factors found in G. L. c. 208, § 34, apply and, as these factors were considered by the judge and his findings are amply supported by the evidence, we will uphold the judgment as to alimony.
¶25Corrected judgment of divorce nisi affirmed.
¶26He also appeals from the provisions of the judgment governing visitation with the parties’ minor child.
¶27The agreement also contains a provision that if, at the time of divorce, the marital home is solely owned by Craig, Donna must “vacate said residence forthwith,” and in such event, Craig would become obligated to pay support. Craig makes no argument that this clause has any relevance to our consideration whether the alimony waiver provision was valid when made. We note that whether under this clause Donna would ever be entitled to support is subject to contingencies entirely within Craig’s control; there is also nothing in the agreement requiring Craig to provide a home for Donna.
¶28Neither party has raised any argument with respect to the meaning to be given to the following provision in the antenuptial agreement: “Both parties further understand that any waiver or modification of their right to seek *721spousal maintenance, as contained herein, may be voidable under certain circumstances and may be subject to reconsideration by a court of competent jurisdiction.”
¶29Under the terms of the corrected judgment of divorce nisi, Donna’s share of the assets included the marital home (encumbered by a mortgage). The judge determined that the marital home was jointly held during the marriage until transferred to a trust benefiting the parties; had been built with marital funds; and was a marital asset subject to division, rulings that Craig does not contest. Neither party appeals from the judgment insofar as it deals with property division.
¶30It has been authorized by statute since 1845. General Laws c. 209, § 25, provides:
“At any time before marriage, the parties may make a written contract providing that, after the marriage is solemnized, the whole or any designated part of the real or personal property or any right of action, of which either party may be seized or possessed at the time of the marriage, shall remain or become the property of the husband or wife, according to the terms of the contract. Such contract may limit to the husband or wife an estate in fee or for life in the whole or any part of the property, and may designate any other lawful limitations. All such limitations shall take effect at the time of the marriage in like manner as if they had been contained in a deed conveying the property limited.”
¶31A discussion of case law in effect in 1968, which in general imposed limitations on the scope of antenuptial agreements, is set forth in Clark, Jr., Domestic Relations in the United States § 1.9, at 28-29 (1968).
¶32For a discussion of cases reflecting this shift in the law, see Marriage as Contract and Marriage as Partnership: The Future of Antenuptial Agreement Law, 116 Harv. L. Rev. 2075, 2077-2080 (2003).
¶33Our Legislature has not adopted the UPAA. Among States that have adopted the UPAA, several have modified it to provide greater judicial oversight to prevent extremely unfair agreements. See, e.g., Cal. Family Code § 1612(c) (West 2004); Ill. Ann. Stat. 750, par. 10/7(b) (Smith-Hurd 1999); Ind. Code Ann. § 31-11-3-8(b)(2) (Burns 2003); 26 N.J. Stat. Ann. § 37:2-32(c) (West 2002).
¶34In Frenchv. McAnarney, supra,the court invalidated an antenuptial agreement that contained a waiver by the wife of her right to be supported during the marriage, concluding that “[m]arriage is not merely a contract between the parties. It is the foundation of the family. It is a social institution of the highest importance. The Commonwealth has a deep interest that its integrity is not jeopardized.” Id. at 546. Relying on cases from other jurisdictions that invalidated antenuptial agreements restricting alimony in the event of divorce, the court held that “a contract to reheve the [husband] from the obligation to support his wife after marriage” is against public policy. Id. at 548.
¶35In this respect, the standard articulated in DeMatteo, supra,and Osborne, supra,is consonant with that proposed by the ALI. See ALI § 7.05 comment b, at 987 (“in contrast to the premarital agreement containing terms that apply only to the consequences of a presently unexpected dissolution, the usual long-term commercial agreement has immediate as well as continuing relevance. It typically governs an ongoing relationship with terms that apply every day, until the parties’ relationship ends, while the premarital agreement’s terms apply only ¿f the relationship is dissolved”).
¶36The agreement strips Donna of any claims to all of the significant assets known to the parties at the time the agreement was executed.
¶37In the context of assessing the validity of antenuptial agreements, the cases appear to treat premarital limitations on property as matter distinct from premarital limitations on alimony. Substantially all jurisdictions now uphold antenuptial agreements that place limitations on the extent to which one spouse may seek an interest in property owned by the other spouse prior to the marriage, whereas limitations on alimony are not uniformly approved or if authorized, are more closely scrutinized. See Clark, Jr., supra at § 1.9, at 52-53. This seems in part due to the fact that most such provisions seek only to protect the wealthy spouse’s existing assets from future distribution to the *726other spouse, a limitation courts have viewed with approval. See id. at 41. See also DeMatteov. DeMatteo, supra at 31 (relinquishment of claims to substantial existing assets of future spouse does not necessarily render antenuptial agreement invalid; such “agreement may be most desired when a wealthy individual contemplating marriage seeks to ensure that, if the marriage is not successful, his or her own assets will not accrue to the spouse”); Button v. Button, 131 Wis. 2d 84, 96 (1986) (“A party should be able to enter into an agreement. . . which preserves property acquired before marriage for persons other than the spouse”).
¶38The common law obligation to support a dependent spouse has, under G. L. c. 208, § 34, evolved into a valuable right on divorce, the extent of which is to be determined in light of various factors enumerated in that statute.
¶39In Buttonv. Button, 131 Wis. 2d at 97, Justice Abrahamson proposes that, in addition to considering “the circumstances existing at the execution of the agreement and those reasonably foreseeable,” it is also appropriate to take into account “that the duration of the marriage is unknown and [the parties] wish the agreement to govern their financial arrangements whether the marriage lasts a short time or for many years. The parties should consider such factors as the objectives of the parties in executing an agreement, the economic circumstances of the parties, the property brought to the marriage by each party, each spouse’s family relationships and obligations to persons other than to the spouse, the earning capacity of each person, the anticipated contribution *727by one party to the education, training or increased earning power of the other, the future needs of the respective spouses, the age and physical and emotional health of the parties, and the expected contribution of each party to the marriage, giving appropriate economic value to each party’s contribution in homemaking and child care services.”
¶40Although we do not require that the foregoing factors be considered by a judge when determining the validity of an agreement, see Rosenberg v. Lipnick, 377 Mass. 666, 672 (1979) (listing factors), an attorney representing a client desiring to enter into an antenuptial agreement will better protect against the possibility that provisions of the agreement may be held invalid by crafting a document that reflects consideration of the foregoing factors.
¶41Parties might agree that, although a court could decide otherwise, see Rosenblatt v. Kazlow-Rosenblatt, 39 Mass. App. Ct. 297, 301 (1995) (even in short-term marriages the parties’ standard of need is not to be measured by status prior to marriage, but by standard enjoyed during the marriage), in the event of a short-term marriage, alimony will be waived, whereas if the marriage continues for a specified period of years before ending in divorce, alimony will be paid.
¶42Because we decide that the judge used the correct “fair and reasonable” standard in assessing whether the alimony waiver was valid, we do not reach the argument that the judge used an incorrect standard in assessing whether the agreement should be enforced at the time of the divorce.
¶43We note that under DeMatteo, “the term ‘conscionability’ is [the] appropriate term to describe the standard at the time of enforceability.” 436 Mass. at 38. As defined in DeMatteo, “conscionability” precludes consideration of “the fact that this is a ten year marriage which produced two children.” Ibid.Whether considerations of conscionability would preclude enforcement of a valid alimony waiver if at the time of divorce the parties were married over thirty years and a dependant spouse of advanced years has not been employed outside the home for many decades, has not been the subject of any published opinion by our courts. Compare ALI § 7.05(2), at 982-984, articulating standard of enforceability and proposing that the following circumstances are appropriate to a consideration whether enforcement would work a substantial injustice:
“(a) more than a fixed number of years have passed, that number being set in a rule of statewide application;
“(b) a child was bom to, or adopted by, the parties, who at the time of execution had no children in common;
“(c) there has been a change in circumstances that has a substantial impact on the parties or their children, but when they executed the agreement the parties probably did not anticipate either the change, or its impact.”
¶44He further found that, prior to executing the antenuptial agreement two days before the wedding, “both parties sought the advice of legal counsel”; the parties had made fair disclosure of their assets; and Donna was aware of her rights to alimony, support, and property division and on this basis her waiver was “knowing, voluntary and intelligent.” These are additional prerequisites to finding an antenuptial agreement valid. We are not solely concerned with whether Donna entered the agreement freely and knowingly but also whether, objectively viewed, the agreement was fair and reasonable when it was made.