Bondservants, obey in everything those who are your earthly masters, not by way of eye-service, as people-pleasers, but with sincerity of heart, fearing the Lord. Colossians 3:22

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At first glance, it might seem that the above verse doesn't really apply to us living in freedom in the USA and elsewhere. But if you think about it, workers are beholden to their employers to provide services during the agreed-upon hours (whether for a set length of time or indefinite). Employees agree to this arrangement in order to pay for what they need and/or want (which usually includes a desire to have enough to eventually retire).

continuing:

Whatever you do, work heartily, as for the Lord and not for men, knowing that from the Lord you will receive the inheritance as your reward. You are serving the Lord Christ. For the wrongdoer will be paid back for the wrong he has done, and there is no partiality. Colossians 3:23-25

related:

Bondservants, obey your earthly masters with fear and trembling, with a sincere heart, as you would Christ, not by the way of eye-service, as people-pleasers, but as bondservants of Christ, doing the will of God from the heart, rendering service with a good will as to the Lord and not to man, knowing that whatever good anyone does, this he will receive back from the Lord, whether he is a bondservant or is free. Masters, do the same to them, and stop your threatening, knowing that he who is both their Master and yours is in heaven, and that there is no partiality with him. Ephesians 6:5-9

Unless the LORD builds the house, those who build it labor in vain. Unless the LORD watches over the city, the watchman stays awake in vain. It is in vain that you rise up early and go late to rest, eating the bread of anxious toil; for he gives to his beloved sleep. Psalms 127:1-2