"园林工人的工作" can be translated into English as "the work of landscapers" or "landscaping work".
"The work of landscapers" directly refers to the tasks and responsibilities carried out by landscapers (园林工人).
"Landscaping work" is a more general term that encompasses all activities related to designing, maintaining, and beautifying outdoor spaces, which is essentially what landscapers do.
Both expressions are appropriate, depending on the context and the level of specificity desired.