Hey Rocio! Thanks for the suggestion, we have submitted this feedback to our Development Team.
I have two possible workarounds, the first would be dependent on your plan type. If you are not at your plan's user limit, you can create a user with specific permissions based on what the 3rd-party vendor or subcontractor needs access to.
Another potential workaround is printing the day sheet for the 3rd party. This is a common workaround for other Jobber users who hire outsourced labor. For more information on Day Sheets, click here.