A boss who "cruelly exploited" a young employee by plying her with alcohol before raping her in his car will spend a minimum five years in jail.

The employer was 32 when he took advantage of his position by encouraging his worker, then 18 and in her first job after completing VCE, to confide her secrets and view him as "no ordinary boss", the County Court heard on Monday.

When the young woman told him she went "crazy" when affected by alcohol, the boss arranged for them to go to a bar within weeks of her starting the job, in November 2011.

The court heard that while at the bar, the boss bought the woman six or seven vodka drinks while he drank water, and later raped her while she was in his car when she thought she would be given a lift home.

The sentencing judge said rape was an abhorrent crime and that the man had "cruelly exploited (the woman's) naivety and vulnerability" at a time when she needed looking after, as she was clearly affected by alcohol.

The man was last week found guilty after a trial.

The young woman told the court she had endured fear, anxiety and anger over the past two years, had been unable to be left alone for months and had experienced body issues trying to "escape the body that had been raped".

She recalled nightmares, constant fear, a loss of trust in people and feeling her personal growth had been "stunted" since that night.

"I literally cannot live in peace ... I am constantly raped again, over and over, in my mind," she told the court.

The woman said she had wondered why she had been forced on a "path to hell", which had included disgust at being cross-examined during a committal hearing and then a trial, and having photographs of her nude body shown to jurors.

The judge praised the woman's courage in giving evidence in person in court and reading aloud her victim impact statement, and hoped her actions would inspire other victims of sexual abuse to come forward.

The judge said the employer had abused the power the man held in his relationship with his colleague.

The employer, now 35 and the father of a four-year-old daughter, showed no emotion as the judge imposed a head sentence of seven years in jail.