'Hireling' in the Bible

It shall not seem hard unto thee, when thou lettest him go free from thee; for to the double of the hire of a hireling hath he served thee six years: and Jehovah thy God will bless thee in all that thou doest.

Is there not a warfare to man upon earth? And are not his days like the days of a hireling?

As a servant that earnestly desireth the shadow, And as a hireling that looketh for his wages:

Look away from him, that he may rest, Till he shall accomplish, as a hireling, his day.

But now Jehovah hath spoken, saying, Within three years, as the years of a hireling, the glory of Moab shall be brought into contempt, with all his great multitude; and the remnant shall be very small and of no account.

For thus hath the Lord said unto me, Within a year, according to the years of a hireling, all the glory of Kedar shall fail;

And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against the false swearers, and against those that oppress the hireling in his wages, the widow, and the fatherless, and that turn aside the sojourner from his right , and fear not me, saith Jehovah of hosts.