Someone who chops down trees - is a lumberjack.
A person who works with the refined wood is a carpenter, joiner or cabinet-maker, depending on the class of work.
someone who works for a business
An employee
a wood cutter cuts wood so i think just a wood carver would do
a horticulturalist
demonologist
Mason
collector
A gardener.
An electrician.
coach
paver
A co-worker. or colleague