Funding cuts by the Reagan administration and the nation's economic slump are forcing state governments to implement widespread layoffs, a survey conducted by the Bureau of National Affairs, Inc., shows.

The BNA survey, which was conducted in December, shows that layoffs of state employes occurred in 43 of the 50 states during fiscal year 1981. Already in fiscal year 1982, said BNA, 44 states either have laid off workers or anticipate doing so before the end of the year.

Most states attributed the cutbacks, in part, to reduced federal funding.

The survey of state officials showed that even where layoffs were not occurring, states are reducing their work forces through attrition. Some states have reduced their work forces by several thousand positions through attrition, BNA, a private publisher located in the District, said.

State departments such as employment security commissions were forced to make more severe personnel cuts than others because of their heavier dependence on federal funding, BNA said interviews with state officials showed.

"The federal funding cuts merely compounded the already serious recession-induced budget problems of a number of states," BNA said.

The reductions in force (RIFs) range from a low of three employes in Delaware to a high of 2,000 in West Virginia.

At least 12,500 workers were laid off in fiscal 1981, while 16,300 state employes have been or will be laid off during the current fiscal year, the BNA survey found.

The District was not included in the survey. However, Maryland and Virginia officials project several hundred more layoffs in fiscal 1982 than last fiscal year.

About 500 of Maryland's 80,000 state employes were laid off in fiscal 1981, while an estimated 700 to 800 will be cut this year, according to BNA. Of that number, 89 were laid off in December.

BNA said Maryland officials disclosed that 1,200 workers had been scheduled to be laid off this year and that 989 have received RIF notices. The state's equal employment opportunity office reported that 80 percent of those who received RIF notices were women and minorities.

However, a special office established by state officials succeeded in reassigning all but 83 of the 989.

In Virginia, state officials said only 230 of 96,629 employes were laid off in fiscal 1981 and that by Dec. 15 another 163 had been cut in this fiscal year. At least 400 employes were expected to be laid off this year.

BNA said Virginia officials called the layoffs a "direct result" of federal government cutbacks.