Early access gigs are available to workers with the highest ratings. There are a few different factors that contribute to this score in addition to the rating provided by the business.
You can raise your score and get early access by working more gigs and continuing to do your best!
Avoid the following because they can negatively impact your score: arriving late, canceling a gig you've already committed to, and not showing up for a gig. The number of gigs you work has an impact as well so the more you work the better your score can get!