Slaughter and May has bumped up the discretionary bonuses it pays to associates on top of their regular pay packages.

Top-performing associates with 4.5 to 6.5 years' post qualification experience (PQE) will take home a bonus of up to 15% of their salary, up on last year's equivalent of 12%. Fee earners with 2.5 to 4 years' PQE will gain a 12.5% bonus, an increase from 10%.

Lawyers with one to two years' PQE will earn a bonus of 10%, a rise on last year's 8% bonus, and those with up to six months' PQE will receive 7.5%, an incraese on the 6% given out at the end of 2013.

Meanwhile, the bonus payout for trainees and support staff remains static at 3%.

"Our bonus levels reflect a busy year for the firm and our staff," said Slaughters' executive partner Richard Clark (pictured). "We do not impose billing or time recording targets on our associates and our approach to bonus differentiation is to recognise performance and career progression while ensuring that we reflect our team culture of valuing and recognising everyone's contribution."

Last year the firm introduced a new appraisal process for its associates, adopting merit-linked pay elements with maximum bonus payouts awarded to those achieving a "good" or "exceptional" level of performance.

The news comes after several US firms last week unveiled their associate bonuses for 2014, including Davis Polk & Wardwell and Skadden Arps Slate Meagher & Flom, both of which surpassed the benchmark set by Simpson Thacher & Bartlett which saw some junior associates enjoying an annual bonus increase of more than 100%.