A woman's work is not confined to her household. That view point has been wrongly driven by past church dogma still persisting today, which does not carefully consider Prov. 31. If we look at the description of the woman's activities in managing her household, you might well consider that she is a modern day business woman.
"10 A woman of worth who doth find? Yea, far above rubies [is] her price. 11 The heart of her husband hath trusted in her, And spoil he lacketh not.
12 She hath done him good, and not evil, All days of her life. 13 She hath sought wool and flax, And with delight she worketh [with] her hands.
14 She hath been as ships of the merchant, From afar she bringeth in her bread. 15 Yea, she riseth while yet night, And giveth food to her household, And a portion to her damsels.
16 She hath considered a field, and taketh it, From the fruit of her hands she hath planted a vineyard. 17 She hath girded with might her loins, And doth strengthen her arms.
18 She hath perceived when her merchandise [is] good, Her lamp is not extinguished in the night. 19 Her hands she hath sent forth on a spindle, And her hands have held a distaff.
20 Her hand she hath spread forth to the poor, Yea, her hands she sent forth to the needy. 21 She is not afraid of her household from snow, For all her household are clothed [with] scarlet.
22 Ornamental coverings she hath made for herself, Silk and purple [are] her clothing. 23 Known in the gates is her husband, In his sitting with elders of the land.
24 Linen garments she hath made, and selleth, And a girdle she hath given to the merchant. 25 Strength and honour [are] her clothing, And she rejoiceth at a latter day.
26 Her mouth she hath opened in wisdom, And the law of kindness [is] on her tongue. 27 She [is] watching the ways of her household, And bread of sloth she eateth not.
28 Her sons have risen up, and pronounce her happy, Her husband, and he praiseth her,
29 `Many [are] the daughters who have done worthily, Thou hast gone up above them all.'
30 The grace [is] false, and the beauty [is] vain, A woman fearing Jehovah, she may boast herself. 31 Give ye to her of the fruit of her hands, And her works do praise her in the gates!" (Prov. 31:10-30, YLT)
Is this woman confined to her house, or is she out buying supplies, selling land, trading goods? She is the household manager, and she does whatever it takes to be sure her family and servants are well fed and well clothed.
The better understanding of Titus 2:5 is a directive to the woman/wife that she actually does work, and not to be a lazy layabout with her feet up on a cushion, reading all day, and watching TV programs till her husband comes home at night.
If today that means that she also has to work outside the home in order to be able to acquire the goods to manage her household then so be it. The cause of the two income household is another topic all together which is fully the fault of the international counterfeit fraudulent reserve "banking" system that has stolen the wealth of the people.