It is important that employees use their holiday time as it is essential for them to rest and recuperate, it has been claimed.
According to the Advisory, Conciliation and Arbitration Service (Acas), people are more productive if they return to work feeling refreshed after charging their batteries.
Therefore Acas supports some employers who are encouraging workers who are ill during a period of holiday to take this leave as sick absence.
The holiday can then be taken at another time.
Gill Trevelyan, head of good practice for Acas, said: "This means that the recuperative benefits of holidays are not lost."
This week, absence rates in the UK were particularly high, with 12.5 per cent of people calling in sick to work.
Holidays are vital stimulators to keeping staff fresh and enthusiastic asserts a spokesperson for ClickAJob.
"All work and no reward is an impossible condition for anyone to sustain," he states.
"If you expect employees to be keen, on the ball and go the extra mile, they need to know their holidays are sacrosanct, a deliberate leisure break to revitalise their commitment."
"They need to have a clear conscience about sick leave as well the Benylin people have a point, because struggling to the office to infect everybody else is frankly counter-productive," he continues.
"Staff throwing sickies to grab time for themselves is another problem entirely, a warning that employee motivation may be in need of review."
FirstCare suggests that employers encourage workers to make full use of their breaks and provide fresh fruit so people do not turn to unhealthy snacks.