The right of those working in the public sector to strike is controversial. Many private sector workers are of the opinion that the cost to tax payers and delays or closures in services outweighs any benefit that may be achieved through industrial action. In addition to this, employers have been criticised for their inability to prevent their workers from striking; it is the responsibility of employers to provide for the continual smooth running of public services, many of which provide a vital aspect of day to day life. An example of this can be seen in the transport industry, where severe delays can have a knock-on effect on the functioning of other industries. Unions should be encouraged to find a less disruptive way of settling disputes.