California Code, Penal Code - PEN § 1208.5

The boards of supervisors of two or more counties having work furlough programs may enter into agreements whereby a person sentenced to, or imprisoned in, the jail of one county, but regularly residing in another county or regularly employed in another county, may be transferred by the sheriff of the county in which he or she is confined to the jail of the county in which he or she resides or is employed, in order that he or she may be enabled to continue in his or her regular employment or education in the other county through the county's work furlough program.  This agreement may make provision for the support of transferred persons by the county from which they are transferred.  The board of supervisors of any county may, by ordinance, delegate the authority to enter into these agreements to the work furlough administrator.

This section shall become operative on January 1, 1999.