"April is often when new budgets are implemented, and wage adjustments would follow naturally from this process.
"The July changes are related to the 'half-year pay reviews' which are common in many firms. July seems like a natural time to carry out wage adjustments in New Zealand; it is during the quieter winter months, staff are less likely to be away on holidays.
"Moreover, July reflects the start of the Australian fiscal year, so firms with an Australian
connection (e.g. operations in Australia, and Australian parent company) may be more likely to change wages in July than in other months."
But not all firms made annual changes with 20 per cent making less than annual changes - smaller companies were more likely to wait longer to change pay.
The lucky ones may be the employees who work for the 6 per cent of businesses which change pay more often than once a year.
The bad news is that payrises may be small or non-existent this year because of low inflation levels.
April is often when new budgets are implemented, and wage adjustments would follow naturally from this process.
The research found 43 per cent of companies used past or future inflation expectations to help make wage and salary decisions and larger firms were more likely to do so more than half of employees (55 per cent) facing pay decisions impacted by inflation.
Changes to the minimum wage had less of an impact with just 13 per cent of firms moving the wages because of a requirement to pay staff a certain amount above the minimum wage.
However the research also noted New Zealand businesses were reluctant to cut pay because of concerns about losing value staff members.
The discussion paper was based on research carried out in 2010 by Statistics New Zealand covering more than 5300 businesses.