OK.
Reg. employee acces: I think you should use the access tag(s) to map that, e.g. with access=private. A hw=service doesn't imply that. If you want to keep service instead of track you should also add surface=unpaved where appropriate.
BTW: The wiki for orchards mentions palms, see
landuse=orchard#Usage

Dann sollte es ein highway=service mit access=permissve o.s.ä. sein.

Hi! Please watch out, you created a lot of duplicated buildings here. Always make sure that you download the existing data before adding new.

I've just noticed two other "accidents":
highway=<different> . Fixed it here:
changeset/63251768

Hi!
I've noticed this change because of the unusual tag highway=impassable used here:
way/550176507
If I got that right MapBox Sat image shows a new road there.

Habe gesehen, dast Du zumindest einen Weg geändert hast. Habe jetzt auch die anderen korrigiert:
changeset/62875546

Done, please review changeset/63251007

There is also way/292244991 with
highway=track;steps
No idea if a track can have steps, but I think it is more likely that this is a hw=path or hw=bridleway.

Forgot the link:
way/172129916

Hi! You changed a highway=residential to the very unusual highway=commercial.
I assume this happened accidentially?

Moin!
Ist das highway=permissive Absicht, weil es ein so spezieller Weg ist?
way/155738436

Hi! Please check unusual tag highway=cyclestreet on way/154556433
Maybe you meant highway=cycleway or you wanted to bicycle_road=yes and keep highway=unclassified?

Hi! Why did you change highway=footway to the very unusual highway="Simple unmarked footpath" here:
way/74077857 ?

Forgot a link to my changeset:
changeset/63223213

Hi! Please review these ways
way/409828247
way/409828270
They were tagged highway=سه
instead of residential. I guess you wanted to add a name tag but I doubt that they both have the same name.

Corrected it myself now:
changeset/63222062

I've now corrected this, see changeset/63221969

Hi! Please review unusual tagging
highway=way on some ways in this area.
I guess highway=path might match?

Falsch würde ich so nicht sagen, aber eben nirgendwo sonst in OSM verwendet und daher unklar.
Schau mal hier:
http://gis.19327.n8.nabble.com/Requesting-to-remove-stoplines-in-San-Jose-td5902989.html

Hi! Please check typo highway=truck.
Looks like highway=service, but maybe it is something special?
way/582050484
way/582050485